6th Anniversary, totally cool event, tons of free stuff.

Braindome

Really easy and fun, also if you jump up on the cake and blow out all six candles you get a couple of achievements. Make sure to visit both npc's, one gives a daily reward (I got an exp booster today) and the other gives the one time gift with the free vehicle, action figure, etc.

http://www.arcgames.com/en/games/champions-online/news/detail/9535533-champions-online%3A-happy-six-year-anniversary%21

Po_gg

Suzie already posted it
http://www.mmorpg.com/gamelist.cfm/game/335/view/news/read/36198/Champions-Online-Sixth-Anniversary-to-be-Celebrated-with-MonthLong-Party.html