We've posted a lot of videos on CNN.com this year, but the ones that seem to be the most popular are the viral videos. From the hilarious barking cat to the incredibly talented mini-Nicki Minaj, 2011 has been jam-packed with some incredibly amusing videos. In the spirit of the end of the year, we at Gotta Watch put together the four most-watched viral videos on CNN.com in 2011. Enjoy!
Rejection is funny - This video out of Missouri proves that laughing truly is contagious. A letter that would make most of us mad seems to have a very different effect on a little boy.
Tickle me penguin - What's cuter than a laughing baby? A laughing penguin. More than 10,000 of you recommended this video of a penguin getting tickled on Facebook, and here's you chance to watch it again.
Play dead - Now we move from penguins to puppies. Watch what happens when two puppies wrestle and one bites the other's ear. It's a wildly popular video that you've simply gotta watch.
Kayaker's shark tale - Kayaking can be a relaxing form of exercise, until you end up paddling right next to a gigantic basking shark. What makes this video so great is that the encounter is caught on tape. You'll have to see it for yourself.