If you're ever having a bad day go to cuteoverload.com and your heart will fill with warm fuzzies and smiles. It will also increase your desire to own a puppy and/or kitten; or in my case a deer, bunny, baby elephant, or hedgehog.
I don't know if it's possible to achieve actual overload from cute things but I suppose a good indicator if all anyone can make out from you when viewing this website is high pitched squeals and "awwwwws".
The best part about the website is the commentary the writers of the blog given to the pictures submitted. I have an adorable dog of my own so I often wonder what she's thinking, and after reading the captions to their pictures make me feel like my predictions aren't too far off.