I thought the fight scenes in the new "Casino Royale" were pretty well done. In the books, James Bond is supposed to be a Judo expert, presumably a black belt, and Daniel Craig pulls off some subtle Judo stuff in the fights. In the opening sequence when he's dragging the guy towards the sink to drown him, he has him by the collar and appears to be doing either a sliding collar choke or a variation of a thrusting choke. Later on, he kills the assassin in the stairwell with a rear naked choke. I think he even had his hooks in.
There's also a scene where he kills a guy with a knife to the lower back that some people complained to me looked unrealistic (i.e., guy immediately dies from one stab wound to the back), but from what I've read the scene might have been pretty well spot-on. Lt. Col. Dave Grossman writes about the method of killing a sentry with a knife in his book
On Killing, and says that the preferred method isn't sneaking up behind the person, clamping your hand over his mouth, and slitting his throat like you see in the movies (although that works); rather, it's stabbing him in the kidney. The excruciating pain and shock leaves the sentry unable to even scream or move, which looked like what was happening in the movie. Gruesome and a little hard to watch with that in mind.
Another one someone was mentioning to me the other day: the fight scene between John Cusack and Benny "The Jet" Urquidez in Grosse Pointe Blank. I haven't seen it in years and didn't even realize Urquidez was in it, so now I want to go rent it and watch it again.