Games I love to play. I return to them again and again.
1. Half-Life 2
I've played all the way through at least three times. Tightly scripted, well-choreographed, never-a-dull-moment (the lulls are perfectly planned and welcome). Dabbled with the Hammer editor more than I have with any other game, which isn't saying much, but does speak to the ease and flexibility of the system Valve created.
2. World of Warcraft
Stupid time suck. But it's the only way I get to communicate with certain friends. They've certainly never heard of a telephone. I hate grinding, but getting into a good grind in this game is like finding the pocket in a good funk rhythm -- you can stay there all night.
3. Grand Theft Auto: San Andreas
Provides gameplay for every palate. Coming at the game several times over the course of the last year, its flaws become more apparent. But exercise caution -- it's dreadfully simple to get sucked back in to running missions, making money and tooling around the countryside.
4. The Movies
Still monkeying with this one, but that's the whole point. In-depth monkeying. The amount of content is staggering. A million-and-one expansions, please.
That's it. Only four, I know.
You might notice some high-profile titles are missing from this list.
Maybe you think F.E.A.R. should be on here? Sorry, I hated it. What of Civilization IV? I have the misfortune of owning a RADEON card which refuses to run the damn thing unless I perform an elaborate Ewe Voodoo ritual. I have better uses for my gris-gris.