I believe a Sengoku Basara anime is in the works (by Production I.G.? Not sure). I think all the game to anime adaptations I know has already been mentioned here and that Basara bit was the only other thing I can think of at the moment.
I was able to watch one of the Street Fighter movies--it was the third I think? It was among the first anime that lead me to like anime.

Ah! Which reminds me of.. a Fatal Fury movie I also watched around that time.
Hey, what about game to live-action adaptations? *recalls SF movie* Um. Okay, nevermind.
But the DOA movie seemed nice.. I wonder if someone will make a Tekken or KOF one..
How ya doing, buddy?