If you are into Action, and don't mind downloading, Theres always the sub of Law of Ueki, which I love greatly. The Meloncholy of Haruhi is also hilarious. Though I think the funniest of all anime is Ouran High School Host Club. Also, cowboy Bebop. Simply Awesome.

If your like some more sur-real concepts, there is always one of my perosnal Favorites, PAranoia Agent.