My Little Pony: Friendship Is Magic - The Friendship Express
She may be the smartest unicorn in Equestria, but twilight Sparkle gets an "incomplete" in friendship. There's more to life than learning magic, after all - so Princess Celestia sends her pupil to Ponyville, where she meets five special ponies who take her on exciting adventures and teach her the most powerful magic of all. . .the magic of friendship!
Friendship is Magic, Part 1 (Mare In The Moon)
Friendship is Magic, Part 2 (Elements Of Harmony)
Over A Barrel
Hearth's Warming Eve
The Last Roundup