The theoretical cast of the Half-Life: 2 movie

Justin Kemppainen, The Minnesota Game Examiner writes:
Completely, hypothetically speaking. This sort of question has been floating around game forums all over the place for ages now. I do sort of hope that they never, ever make a film out of the Half-Life series because there's a pretty good chance that it would be entirely awful. If it was decided to make Gordon speak, many fans would be outraged. I wouldn't, but I've never liked the mute protagonist thing. If he didn't speak, it'd be immensely difficult to make it reasonably work without boring audiences to tears. Oh, this is, of course, totally for Half-Life 2; it has a better story. Here is the all-star cast...