http://eyeonspringfield.tumblr.com
Eye on Springfield is a blog that just posts great
Simpsons screenshots, capturing some of the funniest and most bizarre moments of the first 9 seasons.
This is one of my favorite blogs to check, and for any
Simpsons fan, it's a wealth of serious hilarity. You could spend (and I have spent) an awful lot of time going through the pages there, laughing tears out.
Enjoy, if you haven't already.