I love all sorts of mods. Stalker, fallout, half life, elder scrolls, what have you. I love all mods that change lots of stuff within the game, like ones that add weapons and items, and mods that make the game look better, to challenge my Gtx 580 and phenom 6x3.3 processor. Mods, and all community based content for that matter, are what really makes the game for me.
Clear Sky, OGSM.