OK, I think what you were looking for was something uncommon, not something bizarre.
Is homebrew allowed? Because that would open up a lot of stuff. If not, then I would suggest playing a Wilder. Almost every other psionic class (that isn't a complete waste of space like Lurk or Divine Mind) gets played more.
You can have a lot of fun with a Wilder/Thrallherd. And it's good from level 1 if you take Astral Construct, AC + Wild Surge is beautiful.
Another option is Spellthief. I think spellthieves are really fun, especially if you can take the Trickster variant from Dragon Mag, and no one ever plays them. Get yourself a Tooth of Dhalver-Nar (sp?) or just be in the same party as a factotum