A lot of weird in this thread.....
I don't know. Billy Crystal has been in such movies as When Harry Met Sally with Meg Ryan, and Analyze This with Robert DeNiro. He is commonly considered one of the greatest actors of the modern age of cinema.
Is he? I like him and think he's fine at playing Billy Crystal (or one of the 2 or 3 characters he has), and I see he has won some decent acting awards (and a lot, ironically, for hosting the Oscars), but is he really considered one of the greatest actors of the modern age? First time I've heard that.
Seth has said he won't do it again and I'm pretty sure America agrees that's a good idea. I don't watch the Oscars (normally) and I do enjoy the smackdown he dropped on some people, but he's probably a bit too much for that type of setting.
As for NPH, I like him too and think he'll do a fine job...but am I the only person to pretty much only know him from the Harold and Kumar movies? Of course I'm aware he was Doogie (never watched it) and he's on that How I Met Your Mother show (watched it enough to know I don't like it) and my family LOVES that musical comedy he's in with the really long title (musicals and me don't get along), but to me he's the crazy guy stealing Harold's car and getting strippers.