Art Fag City Editor Paddy Johnson says,
I just finished a slide show of collections of found and constructed LOLcats inspired by the musical Cats. I've written an introduction post explaining the phenomenon of LOLcats; that they begin with a found cat image file, are then doctored with bold text and LOLspeak to further cutify the animal and have provided a link to the Musical LOLcat slide show complete with click through images and a "memories" midifile.
Link (warning! sound!)