I've been playing Half Life (1) on the new 27" iMac - bigger is better! I've gotten most of the way through chapter 11 - Surface Tension, but I've discovered I bypassed getting the Tau gun back in chapter 10 - Questionable Ethics. Sigh.... I even managed to get through the whole drain hatch / minefield section without killing the helicopter gunship.

I guess it's back to an earlier savegame.

It's still one of the the best games.