- All the episodes from seasons 1 and 2 are purchasable from the iTunes store (except for the original "The Last Roundup" with the unaltered Derpy).
- All the episodes from seasons 1 and 2 are available via streaming from Netflix.
- Speaking of the original unaltered "The Last Roundup," the The Friendship Express DVD contains not only the episode with canon Derpy but also four others (including the first two episodes from season 1).
- There's also the Royal Pony Wedding DVD.
I obviously recommend the show, but don't take my word for it, listen to Fluttershy. I'm serious. While she's generally friendly and kind, it's not a good idea to turn her down:
Fluttershy really loves animals...