Bateater pythons are AMAZING looking, if you can handle giants and don't mind hybrids.
http://newenglandreptile.com/nerd/im.../bateater1.jpg
Some other favorites of mine, aside from balls:
- Brazilian rainbow boa: http://www.floridaherps.com/product_...89374_zoom.jpg
- Sumatran short-tailed python: http://www.bloodpythons.com/cms/imag...mcurtus_01.jpg
- Rough-scaled sand boa: http://www.jasons-jungle.com/Picture...as/rsf7-01.jpg
- Mandarin rat snake: http://a1.sphotos.ak.fbcdn.net/hphot...42214493_n.jpg
- Oxy-jansen hybrid rat snake: http://ratsnakefoundation.org/galler...normal_Hyb.jpg
- Vietnamese blue beauty: http://i3.photobucket.com/albums/y82...terrat1002.jpg
I can prolly think of more, lol. What do you have already?