Soyo Gogo - Interlocking Opentype with Wrap Around & Ornament Construction Kit $24

OTF Font File | Designer: Dave Rowland 

http://www.myfonts.com/fonts/schizotype/soyo-gogo/

Soyo Gogo was conceived to really make the most of OpenType features. Using contextual alternates, the letters change depending on what type of letter they're next to. The changes happen as you type, with stems wrapping round curves of neighbors in a cool graphic style. But even if you choose not to engage the alternate forms, it’s still a highly usable typeface. The package includes a pdf guide to using the Ornament Construction Kit to really spice up the text.