Check it out: dailykitten.com
If you can't get enough kittens, you have to visit Daily Kitten. The site is dedicated to kitten lovers. With a new picture and story every day, you'll want to make this a daily stop. I personally love the community feel with the Cat Chat Forum. For even more fun, check out Daily Kitten's child site Kittenwar.com to compare kitten images and decide which is the cutest.