Schwimmer... disappeared? I heard he was directing but I've no clue what he directs. Porn?
He directs some good shit, such as Trust, which won some awards and was a very good film.
On that note (one of the stars of said film):
I'll go with my go-to: Clive Owen. Seriously, wtf? He was EVERYWHERE for a while there..
Clive is well know for being willing to go with projects he likes over commercial stuff, he quit a huge TV show in the UK (Chancer) at the height of it's popularity as he didn't believe in it anymore.
He has also made some terrible choices in Hollywood when they were trying to make him into a leading man, but his lower budget work is superb, such as Trust, The Boys are Back and Closer.