Simply Daniel Radcliffe. It had a traffic overload but is working again. More photos: see our Google+ page. (picture source: PA Images)
Update: 16th February 2017. Not sure why I didn't add it here back in 2012, but there is a photo shared by Jessica Ennis on Facebook.
The BBC clip
Great show with Graham Norton. It airs Friday night in the UK.The Google+ link at this page is Dan's post shared via this site's Google+ page.