First of all, the half life movie IS NOT BASED ON THE GAME (hell, there was already a movie made named half-life, it was made in the 70's or something). That should be taken off the list. But I am still expecting a real one, after valve asked their fans some questions pertaining to who they wanted to act out the characters.
Second, there are rumors that Deus Ex (which was cancelled last spring) might come back, but dont hold your breath.
Thridly, the Far Cry movie is supposedly going to be more of a horror movie (its being directed by some german horror director)