Davey Dance Blog is always worth a re-visit, especially for a mid afternoon office bound pick me up (drowsy? who me?)
Previous Davey post is here.
The premise is that he sets up his vid cam and then puts on his headphones, hooks them up to his ipod and dances away, sometimes with other people, often on his own. Have a look through some of his older work at the first link, it's fairly brill.