I wear socks with my Crocs all the time. Not with shorts, of course, LOL, but my black crocs with socks and a pair of jeans look just fine.
Crocs are the best footwear ever...since I bought my first pair last year I've only worn anything else a half-dozen times (only to shovel snow, LOL). I've always hated wearing shoes, but to me they feel like walking barefoot on air.
I also used to put my feet through hell at WDW - blisters and such. I wore Crocs without socks all week on my last trip and my feet didn't have a single issue - never felt better.
I drank the Croc kool-aid, and my feet have never been happier. On occasion when I get a funny look (guy with big black Crocs), I just get one of those warm fuzzy feelings inside when you know a secret that someone else just doesn't get.
AEfx