If you could...

[Sugar]

Would Zecora count?  I'd love to study some of her magickal stuff... but I'd probably wind up my time with her by speaking all in rhyme.

[hathorcat]

Hmmm....tough question. I think it would have to be Firefly though - just for the flying rights alone.

[mlpkatie]

Bubbles! Maybe because she was my favorite G1 from childhood.

[Jinxxy]

Hoppy the Kangaroo! I'd jump in her pouch and she'd hop me around town like a boss...

I'm assuming that even though this world is interacting with our own, that the ponies themselves remain the same and not real looking...?
Because a real kangaroo pouch is kinda gross... >.>