Hugs Suse- Bear in the Big Blue house has a friend Luna who is a moon (obviously) she is in the show quite a bit.
My OT said sensory kids like that feeling of being "hyped" and will hype themselves up to get that feeling, when they do it its "stimming" cause they are trying to stimulate themselves. Riley spins around a lot when he is stimming and will bump into things like a pinball.

If you can ever go to a Sue Larkey seminar or read her books they are awesome. I also borrowed "The out of Sync Child" from Christy and have since bought "The out of sync child has fun" which is heaps of sensory activities in it and is well worth a read.