XKCD

This comic is so awesome. You need to check it out. Their past two comics have been so great that I felt I needed to make an announcement.
Here are some examples of their supreme hilarity.

The difference


Battle Room


Nintendo Surgeon


What XKCD mean - I... uh... seriously used to do that last one


Not Really Into Pokemon


Misuse of Slang - IT BURRRRRNS!


Search History - >_> <_< O_O


Anyways, there are tons more. Checkemout on their site and add their feed to your reader.