Kill Billie, Vol. 2 (episode #177)
Airs May 14th 2006

Forever Charmed (episode #178)
Airs May 21st 2006

Well..... we all saw it comming. Charmed wraps up with 178 episodes. A pretty good mark wich shows the very loyal fan base of the show and it's quality. Not many series reach this amount of episodes so thats a pretty good place... The set activites wrap up on April... so "See you later Charmed"

Source: www.tv.com

You've posted this already. I've moved all of your posts into the Season 8 Spoilers thread because they are spoilers.