This year at the IOI (International Olympiad in Informatics), there will be an Internet Contest.
It's exactly the same as the real contest, and at the same hours, only you can't get a medal.
Internet contest: http://sio.mimuw.edu.pl/ioi2005/
IOI 2005 home page: http://www.ioi2005.pl
I will be on site, so you know you want to participate online, just so you can see how badly I can kick your ass. :)
Edit: Oops. Not same hours. Internet contestants get 24 hours. (Official competitors get 5.)
Are you going to the real one again?
Yes :) It's next week.
You should tell the US guys to invite me, I wouldn't help much, but then we could stop cybering and do the real thing!