Diablo II Lord of Destruction. LOL....when I get frustrated with SH, Hagar tells me to 'go kill some things', i.e. play Diablo. It's my way of getting out my aggressions in a socially acceptable, fun way.
There's just something real soul satisfying about laying waste to hundreds of undead in a single swath. I play Numa, a LOT like Luxor, but the demon killing does it for me. ;)
edit: Ah! I forgot Cave Story!