Long Live the Queen, Season 4, Episode 20.
This season of Charmed has been a real good season. But this episode just puts all the good episodes down the drain. I am so so sick of this Cole/Phoebe/Source storyline, it was good at the start but now it's just a snooze-fest. I actually dread watching this episode. Two things I did however like about this episode was that Cole got vanquished and the special FX, were pretty amazing. Overall, I would have to say this is probably the worst episode of Charmed ever produced, and I will NEVER EVER watch this episode again.