Kirk: Chris Pine (Smokin' Aces, Surrender Dorothy, The Princess Diaries 2)
Spock: Zachary Quinto (recurring roles on "Heroes", "24")
Nero (the bad guy): Eric Bana (Troy, Munich, Black Hawk Down)
Scotty: Simon Pegg (Grindhouse, Mission: Impossible III, Shaun of the Dead[played Shaun], "Band Of Brothers")
Uhura: Zoe Saldana ("Six Degrees", Dirty Deeds, The Terminal, Center Stage)
Chekov: Anton Yelchin ("Huff", Alpha Dog, "The Practice")
Sulu: John Cho (last night's "Ugly Betty", "Kitchen Confidential", HaroldAnd Kumar Go To White Castle [played Harold], American Wedding)
Old Spock: Leonard Nimoy (who?)
As I told him, I wanted to see Gary Sinise as Dr. McCoy, but I have no complaints otherwise. Well, as much as I enjoy John Cho, he doesn't look like Takei to me.
I'm hoping they'll have Christopher Pike and Robert April in the cast of characters.
My brother raises an interesting concern - he's hoping Kirk's experience with the Kobayashi Maru test will be factored into the plot at some point. I hate when established continuity is ignored or sacrificed for what is thought to be a more exciting script.
That's all I have to say on the matter at this time.....
I also want to see Kevin Reilly, Finnegan, and Governor Kodos show up somehow in the plot.