The invasions were very good exp, so I was able to get my shaman to 100, but also quite the event. Lots and LOTS of dying.

Basically invasions happened in 3 spots over Kalimdor and Eastern Kingdoms, with bosses and mini bosses, trash, and flying fortresses.

Some of the bosses were hard to defend against hence all the dying, especially in the case of the Fel Reaver.