Oh, hey, I should add my favorite episodes of seasons 8 and 9 now!
8: Surf and/or Turf, Horse Play, The Parent Map, The Mean 6, The Hearth's Warming Club, On The Road To Friendship, The Washouts, What Lies Beneath, Sounds of Silence
9: The Beginning of the End, Frenemies, Student Counsel, The Last Crusade, Between Dark and Dawn, A Trivial Pursuit, The Summer Sun Setback, She Talks To Angel, A Horse Shoe-In, The Big Mac Question, The Ending of the End, The Last Problem
There's more here than the other seasons...maybe it's recency bias, maybe I got less conservative with what episodes I considered favorites, who knows?