The Freshman - love the new college setting, a definite change after 3 years of the Scoobies' lives surrounding high school, and the "silent" B/A crossover (where Buffy picks up the phone at her house but no one answers, and Angel in L.A. dials a phone number but doesn't say anything & hangs up).. and of course love for Willow's new hair!
Something Blue - simply hilarious, amusing, entertaining.. one of my all-time favourite episodes
Hush - great, artistic, I like the horror scenes with The Gentlemen (pretty rare to see *really* scary BtVS episodes), and also love the scene where Giles tries to explain The Gentlemen to Buffy, Willow, and Xander using overhead projector
This Year’s Girl - FAITH COMES BACK! 🙂
Who Are You - The body switch is an awesome idea, interesting to see the two characters played in different bodies
The Yoko Factor - Because Angel comes back and fights Riley =)
Restless - An episode that I had to watch over and over again to *finally* get a full understanding of it.. lots of significant foreshadows to upcoming episodes, storylines, and conflicts, and deeper insights to the characters' minds and lives
Fear Itself and Superstar were good too, but I wouldn't say over 90%.
Fear Itself - I always love the Halloween episodes in BtVS
Superstar - Because Jonathan is just adorable
For me the worst would be Goodbye Iowa, Where the Wild Things Are, and New Moon Rising.