I like this one :


![alt text][1]


  [1]: http://www.freeimagehosting.net/newuploads/vk7as.jpg

It is (part of) a cyclic covering of $S^2$ minus $5$ points :

![alt text][2]


  [2]: http://www.freeimagehosting.net/newuploads/j1z56.jpg