Rousseau Was Right is in full effect in this movie, Humanity as a whole, when they find out what the latest popular band was, they cheer them on for their journey home, and if memory serves me right, they actually help as well. Seeing one species help another back home is enough for this troper. The only exception was the villain, who was... well evil.
The implied All Just a Dream ending. It's kind of sweet to see the boy's mom putting him to bed.