One of the ways fans of the Half-Life series can keep themselves occupied while speculating on the existence of Half-Life 3 is by jumping on one of the very strange Half-Life 2 roleplaying servers. Not just a multiplayer or story-driven online experience, players act out their parts in the game. Or more likely just shoot each other, a lot and for no reason.
This video pretty much sums up a mix of role-playing on the servers and some shenanigans from the uber-popular Gary's Mod add-on. It's loaded with tons of inside jokes – random gravity surfing, error messages - but still well made enough to get the outsiders too. Try not to shed a tear when Ave Maria starts playing.