http://garfieldminusgarfield.net/
I haven't browsed the site in almost a year but I cant seem to remember why. Amazing site. Basically the guy who makes it posts Garfield comic strips and edits out all the animals and leaves just John. Hilarity ensues.
From the site:
Garfield Minus Garfield is a site dedicated to removing Garfield from the Garfield comic strips in order to reveal the existential angst of a certain young Mr. Jon Arbuckle. It is a journey deep into the mind of an isolated young everyman as he fights a losing battle against loneliness and depression in a quiet American suburb.