'Huttball' from Star Wars: The Old Republic
The Old Republic MMO had a few odd moments, like the sequence in the Imperial Agent storyline where your brainwashing breaks down and you experience hallucinations straight out of a druggy episode of The Prisoner. But oddest of all was Huttball, the PVP mode that cast players against each other in a cross between football and gladiatorial combat, complete with over-the-top announcers in a deathpit full of fire traps. Watching Jedi and Sith take a break from their Galactic Civil War to murder each other over a pigskin (Gamorrean-skin?) was deeply strange.