HereForTheBeer: I never managed to beat Half Life. The first time around it crashed repeatedly at the same point in the game....
bansama: Half Life always crashes for me at around the point you get the crowbar at an encounter with a headcrab. Always. But after getting past that crash (which may take several attempts) the rest of the game is fully playable.
Although there are apparently several more bugs in the Steam based versions and I have never been able to finish it when run from Steam. But the retail disc versions I have play ok asides from that one bug.
Personally, I've never completed a GTA game. I have far more fun with the sandbox elements and find most of the missions in the games to be far less enjoyable, so I just play the bare minimum to open up the whole world and then forget the story line completely.
Had same bugs with Half Life, but when Half Life 2 came out I spent countless hours getting it working so I could complete the story.
Also, never completed Tex Murphy Overseer (DVD Version) due to the common bug close to the end :(