Signature Pics

I was wondering if any of you could give me some URL's to some sites with Big O pics that would fit into a signature, ones that are not too small like avatar ones but ones that are also not so big as so they annoy the other readers on the boards.

http://www.paradigm-city.com/forums/thre...eadid=1820&sid=

Check it out. There are quite a few, and they are good!