hmm, there are a lot of season 2 and 3 episodes that i've watched a bunch of times, but I think the episode i've watched the most is Sense and Sense Ability of season 5. It's one of my all time favorites.
I watch Painted World alot but I think my favorite is
Give me a Sign...I love the interaction between Bane and Prue. especiallly the last scene when Prue is sitting on his lap and they're holding each other Prue looked so happy and she deserved to be.
So does Shannen for that matter and I hope she finds happiness.
I honestly couldn't say, I've seen them all so many times and I usually watch in order.
But I did get seasons 1-3 on dvd before the others, and of the episodes I have decided to randomly watch, it is probably Once Upon a Time, Morality Bites, Coyote Piper or All Hell Breaks Loose.
Primrose Empath and Which Prue is it anyway...oh and shes a man baby a man., not forgetting once upon a time....oh heck ALL of them i've watched COUNTLESS times.