^^^I think that actually IS the best looking asshole in the business at the moment. I would like it like it was the bowl that held the last ice cream in existence.
Edit - Dammit 2012, this was supposed to be right after Catie Minx!
If you look in this thread you will see that the general consensus seems to be a rather large patch of epithelial tissue continuing out from the rectum with a finely creased or wrinkled texture (forming a star) and pink or darker than the surrounding skin.
Personally I think think that Blue Angel has an exceptionally attractive anus, as you can see here: