Here's a great little ditty sure to be stuck in your head for days: Banana / Osaka phone and the Re dub: Badger phone.
Here is the best one yet, Kittys on Fish, but the whole site is pretty cool, http://www.rathergood.com. Check out the “kitten” links on the left (they are not offensive, violent or crude, just funny).
And more Flash fun, the classic, Fishbar! They get wayyyyy better toward the later episodes, but all are click worthy. According to the page, just close any ads that open up, they are all safe. I have the originals and they have the ads in them too. Enjoy