Alex Tew, the guy who brought us the Million Dollar Homepage about 5 years ago decided that we're all becoming a bit ADD in our world of technology so he launched this page -

The premise is simple - don't do anything for 2 minutes. Don't click, don't surf the 'net, don't move your mouse around - just sit there for 2 whole minutes while basking in the so. Can you do it? I got ansy about 10 seconds into it. See if you can.