Go the Distance is incredible. Definitely inspirational.

What do I find inspirational? I guess anything with encouraging lyrics or has an uplifting melody.

I'm not much of one for the movie, but I like the song.

Inspiring song? If I decided to take the time to actually think it out I'd probably have a better one, but off the top of my head "Stand" by Rascal Flatts comes to mind...

Inspirational songs...

As for art it can be anything, from Sonata Arctica's "the cage" for some wild wolf image to Enya for more atmospheric images.

I really dig Disturbed for working out. "Indestructible" especially. Get's you right in the mood to move some heavy weight.

Also there's "St- Elmo's fire" from the Man in Motion Soundtrack XD

But since you mentioned Hercules, I've got some other favourites coming from that corner: "Two Worlds" from the Tarzan Sountrack by Phil Collins, downright awesome. And then there's "I'll make a Man out of you" from Mulan. For those days where persistence is needed.