I only recently saw the original John Wick film starring Keanu Reeves and really enjoyed it. It's a typical story about a guy with a seriously dangerous past who loses his wife and had planned on staying out of his previous job of assassin. It doesn't even matter why he gets pulled back into the life, he does of course with serious consequences.
I figured I'd catch John Wick II when I got a chance but I might have to move that date up since I just saw this trailer for John Wick III which is coming out this Summer. Check it out.