I don't care if I posted this at gaf its worth posting twice!
The harry potter kid was on Ricky Gervais's sitcom extras and it was fantastic. He played himself acting in some fantasy movie but he "in real life" was a sex obsessed freak who constantly swears and pulls out condoms. He wips out a condom, in harry potter glasses no less, snaps it and it lands on the head of the girl from The Avengers.

It's fantastic and worthy of watching: