Add Slaad to the list. For those who don't know, Slaadi are a race of chaotic, D&D monsters who dwell in the Outer Planes. Here's one of Wizards' recent Slaad miniatures, a fearsome Black Slaad.

I just picked up this mini and a nice consignment of other Slaad from an eBay store.
I must share a personal joke from my gaming group about the Green Slaad miniature, pictured below:

He is referred to affectionately in our gaming circle as the "Casino Greeter", as he appears to be offering someone a hearty handshake. RPG and D20 luminary author Monte Cook has a nifty little article on altering this figure.
My intent is to eventually use the Slaadi as villains for a D&D 4E game set in the City of Brass. In the meantime, I may enhance their paint jobs, or just set them up around my painting table and bask in their awesome, fearsome frogginess!
--Scott