Cartoon

This doesn't make your image look exactly like a cartoon but it's pretty close and I think it looks pretty cool.

Here's an example:
 

1) Open PS and paste your image.
2) Go to Layer>> Duplicate Layer.
3) Go to Filter>> Blur>> Gaussian Blur.
4) Set the radius to 8.0 and click OK.
5) Go to your layer window and in the drop down menu select Darken.
6) Go to Layer>> Flatten Image and save your image!

That's it! Hope this tutorial helped!