Sorry, Lew, the Nectar site looks ok to me, but it's after 12am (added, er I mean noon!), a uk site, so maybe joke removed?
But check out .........
http://en.wikipedia.org/wiki/April_1%2C_2006 .
(That's extremely and unbelievably quick, but the few I checked (!) are correct!).
From there, here's a few good ones:
www.getdigital.de/index/0x10a .
www.starslipcrisis.com/ (this already gone!).
http://boakes.org/apple-ipod-space-advert .
www.opera.com/models/ .
www.slimdevices.com/au_press_kronos.html .
www.economist.com/science/displayStory.cfm?story_id=6740040 (my fave).
Of course, those above links will probably disappear in a few hours, this seems permanent but a bit "tasteless":
www.savetherennets.com/index.php