The Best Night Ever

 The Best Night Ever is the twenty-sixth episode of My Little Pony: Friendship is Magic and currently the final episode of the first season. In this episode, Twilight and her friends attend the Grand Galloping Gala, but it doesn't meet with their expectations as shown in The Ticket Master, much to their disappointment.

Summary
Pretty much Fluttershy becomes the embodiment of rage and everyone else is just sad that their dreams didn't happen.

Trivia

 * A picture referencing this episode appears in the game My Little Pony Friendship is Magic: Discover the Difference, which debuted on Hubworld two weeks before the episode's premier. The image shows the ponies wearing the dresses from Suited for Success, seated around a modest table with a plate of half-eaten donuts and they appeared untidy.