I like the headless suicide bomber and...yes, Werebull :-D
Love the serious same games with a bunch of mates over LAN. Never had so much fun ;)
I didn't make it!
SS2 owns, no doubt, but it doesn't even come close to games such as Far Cry or even Call of Duty in Terms of Realism, Replayability and Addictiveness. Does become exponentially more fun the more people you play it with though.
Serious Sam 2 is great in terms of graphical improvements but i think still Serious Sam 1 is way better in terms of story and all-round gameplay. I consider the Serious Sam series to be excellent but won't rate it as the best FPS ever.