My favorite Buffy Episode has to be The Body, when Joyce dies. I cry every time I see it. Why because it was a natural death we didn't see coming. You would have expected that it would be Glory who kills someone close to Buffy but no, her mom died as a result of a brain hemorrhage. I especially breakdown when Anya starts to cry because it's the first human death that has affected her, especially given that she has killed people as a vengeance demon.
My least favorite has to be the entire 7th season, It wasn't good until the last few episodes leading to the finale'.
Angel- My favorite episode is I Will Remember You. Buffy and Angel can finally be together without him becoming Angelus, but after seeing how being human makes Buffy vulnerable and that he can't do good and atone for his bad deeds, he decides to ask for the day to be re-set and only he knows about it, was really heartbreaking because it, we got to see what we've always wanted.
My least favorite was the one about the Cops either being robots or being programmed to be violent toward women. I really hated that so much that I can't remember the name of it. I think it's called "Billy".
Charmed- My favorite is all of the time travel episodes and the first 3 seasons with Prue.
I agree it was a fluid transition with Paige but it took a while for her to grow on me. Individually it would have to be their 100th episode, The Seven year Witch. It's the last time we see Cole and his interaction with Piper was priceless. That no matter how evil he became as the Source, he never stopped loving Phoebe, even after she vanquished him into limbo for good. All he wanted was for her to find love again. I'm glad she ended up with Coop.
My least favorite has to be when they introduced Christy. She annoyed me so much as the idea of her being the big bad was silly but I did enjoy the way the series ended, the only thing missing was Shannen's return as Prue.
Me, A huge fan of all 3 shows which i still watch over and over again on Netflix.