I started another blog that is just all blooper reels all the time. I'll try to queue up videos to post every day. Actors messing up on camera is one of my favorite things. My most recent find is a stash of 1940s gag reels, and I was amused to see that back then they called bloopers "blow-ups." I posted one that features both Bogey cursing and Ronald Reagan frantically trying to fasten his pants.
I give you Blooper Reel Zone.