Jon Bon Jovi appeared as himself in the latest episode of '30 Rock'. And during his opening scene, NBC's "Artist In Residence" was seen as part of the cast of 'Top Chef' and anchoring the NBC Nightly News.
But those won't count towards his League of Themselves application into the TV Crossover Hall of Fame - those are the televersions of those television shows.
But he does have an episode of 'Las Vegas' under his belt so he's 2/3rds of the way there.
He has an impressive body of work as other characters however, especially his run on 'Ally McBeal'. But it's unlikely those will ever get crossed over to other TV series, so appearing as himself will be his best chance for such an - ahem! - "honor".....