Definitely Charmed for me !! Loved it, looked forward to watching it each week with my Mum!! I got the box set and am rewatching it again for the 30th time!!
Second would be Sabrina the teenage witch. Followed closely by Buffy and Angel 🙂
I really enjoyed Friday nights watching Buffy and Angel back then. And many late nights up watching Frasier and Seinfield. My guilty pleasure was watching The Nanny 🙂