Quite a few ring to mind. I agree with Guilty Spark from halo, didnt really seem like a boss to me, just another enemy. Also ill agree with the General Raam from GoW1, but only on hardcore and casual. On Insane I found it fraught, and I breezed through the game on insane.
Finished saints row 2 start of the month. Bosses are okay but if you have good weapondary then they are really easy. The worst one was the ronin last boss. Picture it....On board a burning japanese wooden boat...Japanese gang lord throws you a katana...the final showdown and an epic sword fight...well...not really, a repititon of the same counter over and over again doesnt not make a good boss fight. It was boring and absolute crap.
Oh and GH3 springs to mind too. The slash guitar battle is so easy, its over before its even started. Did it first time, in 30 seconds
After you have resurrected another player, a vote can be held to decide whether or not you are a witch.