This is being discussed online and it seems like a lively debate. We each have our own opinions and I feel that both athletes performances where outstanding.

As I used to swim then I have to say I think Michael Phelps had the more impressive performance for me to watch, I mean 8 Olympic gold medals against the best swimmers in the world, and in most events each of the main swimming competitor was specialising yet Phelps was beating them all. Impressive.

As for Usain Blot, again such an amazing performance to win the blue ribboned event of the Olympic games by such a huge margin! Not only that he took Michael Johnson's record from the '96 Olympic games, that many thought it'd take 50 years to break! Bolt also hit his 3 for 3 in what he wanted, his relaxed attitude towards competing at the biggest competition of any competitors life was an impressive sight.

Either way please vote on who you think you "Olympic Hero" was for the 2008 Beijing Olympic Games in our poll in the right hand sidebar.

There is also a very good website debating the subject here.