While I admit the pacing could've been better in some, and there were an unfortunate number of rushed endings, the only one I really didn't care for was Spike at Your Service. We also got some really nice continuity and the return of many fan favourites throughout the season.
Sleepless in Ponyville, Apple Family Reunion, Just for Sidekicks, and Magical Mystery Cure are some of my all time favourite episodes, and A True, True Friend might just be my new favourite song.
Anywho, here's to an awesome 26 episode season 4!