Yeah, I've seen that before - and I love it. Kirk's "Whut?" being repeated..Tribbles going "Whee!".. I can has laffs. Lots.
I saw that a few months ago before I'd ever seen a lolcats...so when I first saw it I was entertained but also at a loss.
I love lolcats, they're hilarious. "Is in ur station, consumin ur quadrotriticale." "Invisible Klingon." Haha, those are the best!
I never got the whole lolcat speak thing. When I meet a cat, always assume he/she is the most well spoken/best read individual in the room. I am often right.
I just did a quick Google search to find that website, so I'm not sure - maybe there's one out there somewhere! EDIT: Just found LOLinator. Not too bad, depending on which site you put though it.