Not a huge fan, but...

[mapsedge]

I'm not a huge fan of LOLCats...some are amusing, but most are just a few hundred milligrams of ibupro-fail.  However, this compiled list is pretty funny.  I'm particularly fond of "meteor cat" and "Dude...wait...what?"
http://www.flickzzz.com/2008/01/best-of-i-can-has-cheezburger.html

Comments

[brotherwilliam.livejournal.com]

Screw Dis. No Wants! is good too...

[ladyniniane.livejournal.com]

"I can has sushi"

And the "Dude" one...

[hdsqrl.livejournal.com]

I'm a huge ICHC fan. :)