He seems like a great guy, which is rare for someone who grows up as a celebrity!
Seeing him on YouTube reminds me of this video. It's the full clip of some pretty awesome goofy improv dancing by Donny for the Weird Al White and Nerdy video. I saw an article where Donny said his agent told him the Weird Al dancing would ruin his career, but he thought it was fun and really wanted to do it. He said it really bolstered his career instead.