Poetic Forms

I'm trying to put together a collection of poetic forms and was wondering if anyone knew any obscure ones. Squidpuppy brought up Lewis Turco's The Book of Forms: A Handbook of Poetics which is probably the best source out there but even it doesn't cover everything. I'm hurting for forms that begin with "J," "K," "X," "U," and "Y" but I'll look at anything.