Apture. I'd seen this tweet from RWW about using Apture on their site. I clicked on the first link which was a YouTube video and after a quick delay it opened in YouTube rather than playing as a pop out in the RWW site (as shown on this quick screenr). So having had this reply from Apture I thought I'd try this video of Mark Cavendish winning stage 6 sprints on TdF 2010 on my blog to see if it does the same.
PS. I think Apture is brilliant.