I recently bought the 500d (Rebel t1i) which shoots 720p at 30fps. its definately a challenge to film with, but in my opinion that's what also makes it alot of fun to film with. I'm gonna upgrade to a 5d mkII after christmas, but I like the 500d for use as a walkaround camera for now.
I created a little test with my camera, I must admit that my little edit features alot less action and alot more boring stuff.
about the rolling shutter that you mentioned in your blog, I haven't noticed any rolling shutter, but I probably will when I start using it for a few ski shots.
The trampoline vid? Johnny Cash- God's gonna cut you down (Mondkopf Plus de Someil remix)
It's the only Johnny Cash remix that I don't find offensive haha