My personal choices:
- "Hehehe! This is gonna be good!" - A Dwarf from Myth II just before he's about to blow up a crowd of Thrall with a molotov cocktail. It doesn't sound like much but if you've ever played Myth II you'll probably agree.
- "(singing) On the eleventh day of Christmas, Blizzard gave to me: eleven Science Vessels..." - This is a singing science vessel from the StarCraft Map of the Month: The Twelve Days of Starcraft. Random eh?
- "OBJECTION!!!" - From Phoenix Wright: Ace Attorney, natch. This isn't any objection in particular, although the times where either Phoenix or the Prosecution objects to the Judge's Guilty/Not Guilty verdict are probably the best.
[Via Evil Avatar]