It's from an episode of 'N.Y.P.D.' called "Murder For Infinity". (That has a real Quinn Martin ring to it, don't you think?) The detectives are tossing a scuzzy room in a Seventh Street flop-house trying to find clues that will lead them to their suspect in a murder investigation.Detective Johnny Corso brings in this guy, another "resident" by the name of "Marco" who is less than forthcoming with any information about the suspect - that is, until Mike Haines tells Corso to check him out. Fearful that the cops might search his pad, "Marco" describes the guy who was with the suspect.
"Marco" was played by Sam Waterston, and the reason I put his name in quotation marks is because I want to make the argument that he was actually Jack McCoy, the character Waterston played on 'Law & Order' for sixteen years.
Jack McCoy grew up in Chicago, the son of an abusive, bigoted cop who would beat him and his mother for failing in his eyes. (The father would later die of cancer.) Since he would write an article for the New York University Law Review in 1972 (in defense of Catholic priests who protested the Vietnam war), two years after he began work as a prosecutor, it could be that he chose that publication because he himself was an alumnus of their school of law.One reason why he may have gone to NYU's School of Law was to put distance between him and his father.
Since he started working as an ADA in 1970 (according to the 'L&O' episode "Second Opinion", which introduced him), McCoy would have been in law school by November of 1967, which is when the 'N.Y.P.D.' episode "Murder For Infinity" took place. (I'm not saying he went directly to work for the D.A.'s office upon graduating, but it does take three years to complete law school in the United States.)
And that flophouse down on 7th Street would be walking distance to the school. Maybe it was a dump, but Jack probably didn't have access to much money at the time. Even later in life, when he was making a very nice living as the Executive ADA for New York City, he was appreciative of a bargain. ("$362 a month for a 3 bedroom apartment? I'd kill for it.")
Since he wasn't really into that scene, I doubt young Jack McCoy was a drug user, not even the recreational stuff like marijuana. No, as often hinted at in 'Law & Order', alchohol was Jack's personal drug. So I don't think he panicked about the cops searching his pad and finding any narcotics. I think he had something else to hide in there - I'm thinking it was an underage girl. Whether she was still in high school or an NYU undergraduate freshman, she could also have been the girl who would later become the first of Jack's wives. (He was married twice.)
As for the name of "Marco".....
As everyone knows from the movie "National Lampoon's Animal House" (which counts as a reference for Toobworld since it spawned a TV spin-off, 'Delta House'), college students come up with odd nicknames for each other. Sometimes they're based on the student's name - like "Bluto" Blutarsky". Others have something to do with their looks or their personalities. (If you ever want to know why Larry Kroeger got the frat name "Pinto", you better read the original story. I'm trying to run a clean blog here! Or write to me privately.) And sometimes there's no real splainin to be found - just ask my friend Zoilo. (Actually, there is a story to that one, but it never made sense, even to a nonsensical guy like me, why he got saddled with it.)
Anyhoo.....
Perhaps Jack McCoy ended up being called "Marco" by his college friends as a corruption of his last name. He may have later been a fan of the punk scene and the band The Clash, but back in the sixties, who wasn't into the Beatles? Maybe as a tip of the hat to Paul McCartney, his friends first started calling him "Macca", but eventually it devolved into "Marco".
Several decades after the incident at the flophouse, there would be an investigation into a crane collapse at a construction site. The company that was in charge of that site was owned by Wayne Hardy, who probably looked very similar to Detective John Corso in his youth. But Jack McCoy never would have seen a resemblance when he saw Hardy interviewed on the news. After all, his encounter with Detective Corso probably lasted no more than twenty minutes and it happened more than forty years earlier. And in his later years, Hardy no longer looked like the younger Corso.....
So that's my argument for the character of Marco, in just one scene from 'N.Y.P.D.', being Jack McCoy, with the second-longest tenure on 'Law & Order'.
Maybe. I'm not married to the idea.
But just so's ya know, I'm not doing this to buttress the defense of Jack McCoy's inclusion into the TV Crossover Hall of Fame. He was rightfully inducted in December of 2006 based not only on his 368 episodes of 'Law & Order' but also his three episodes of 'Law & Order: Special Victims Unit', two episodes of 'Law & Order: Trial By Jury', two episodes of 'Homicide: Life On The Street', and the TV movie "Exiled".
This is just gravy.
BCnU!
"Some of us were wondering how long it'd take
the real Jack McCoy to rear his shaggy, hippy, liberal head."
ADA Josh Latham
'Law & Order'
~
Jane Russell - Dawn French
2004 'ALF's Hit Talk Show'
Do you recognize the actor with Frank Converse in this picture?
As "First Detective" in the 'Columbo' episode, Monahan was most likely not yet a lieutenant, which is why it wasn't a co-investigation between equals. But I think that even though it was Columbo who did most of the heavy lifting mentally, the successful solution to the crime left everybody involved in the case smelling like a rose afterward. Frank Monahan would have received the promotion to lieutenant soon after that. 
Are there any other TV series or TV movies in which we might find a Garry Walberg role that could be considered Frank Monahan? Well, he was a detective in the pilot episode of 'The Immortal' and a sergeant in the TV movie/pilot "Man On A String". I can't speak for certainty regarding 'The Immortal' pilot, but "Man On A String" did take place in Los Angeles. And in an episode of 'Mannix' ("Little Girl Lost"), he played a bartender - maybe Monahan was moonlighting to make some extra quatloos. 
I'll look into those as best I can (To the Cloud - er, To the Paley Center!), but in the meantime I think we finally have a decent connection between 'Columbo' and 'Quincy, M.E.'
Genevieve Cortese Padalecki played herself as Jared's wife, but Dean as Jared only recognized her as the dead demon Ruby. When they saw Castiel the angel, they thought they were saved. But it turned out that this guy was Mischa Collins, the actor who played Castiel in the TV version - just like the guy back in the Trueniverse (our world).
But it wasn't our world, because in this TV dimension several of the counterparts to real-life figures were killed off.
Other people from the production side of 'Supernatural' showed up in the episode - Robert Singer, Eric Kripke, Jim Michaels, and Kevin Parks - but they were played by actors. (And apparently that really was the voice of producer Sera Gamble heard over the intercom, 'Charlie's Angels'-style.) 
You can expect to see Singer and Kripke at least in the "As Seen On TV" gallery. (I was hoping Eric Kripke would speak with an Elmer Fuddesque speech impediment, like "Bawwy Kwipke" on 'The Big Bang Theory'. "Ewic Kwipke" - heh heh.....)
One final note on this 'Supernatural' episode.... The title "The French Mistake" came from "Blazing Saddles" - It was the song and dance number being rehearsed for the Buddy Bizarre movie musical when the cast of the Mel Brooks musical came crashing through from their own soundstage.
When all was said and done, however, that hospital bed scene was scrapped and we learned that a new scene was written for her. That's proof right there that even though the Toobworld 'All My Children' was based on the "real life" events depicted in the actual show, sometimes characters and scenes are created with no basis in "fact".
With that opening credit letting us know that Victoria Chase was the special guest star, the show was also announcing that we weren't watching the Trueniverse 'All My Children'. The following hour was probably a one-time only broadcast of a fictional episode from within the TV Universe.
This was probably due to Susan Lucci's influence over the writers, giving her this on-air opportunity to humiliate Victoria (knowing that many in the audience would confuse the actress with the character and thus Victoria came off as a loser.) Lucci was probably also responsible for Victoria being saddled with a name like Gertie Stein. She probably wanted to equate Victoria in the minds of viewers with the unattractive looks of the famous writer Gertrude Stein. 
By Friday, everything was back to normal for the Trueniverse audience. The last episode of that week's 'All My Children' strip was the one that showed the "real" people of Pine Valley. If you wanted to see any more of the fictional version of the show, you'll probably have to keep watching shows like 'Hot In Cleveland' which might refer back to it. (But then, at best you may get just audio from the show.)
BCnU!
