Hmmm, good question. The renowned beer float at Golden State only seems exotic or extreme if you haven't tasted it; it's actually almost comfort-foody.
Also, I've had durian smoothies at a few places in Little Saigon, but the only really 'extreme' thing about them is the sensation in your sinus cavity when you suck them through the straw too fast.
[If there's ever a place in LA that does decent Baltic food, one thing I'd love to try for dessert here that I've had in Helsinki and Riga is a sea-buckthorn mousse, prepared at the table over dry ice (you have to keep sea-buckthorn frozen or it goes very bitter) and served on a Black Balzam cake. But I'm not holding my breath.]
The Golden State
426 N. Fairfax Ave., Los Angeles, CA 90036