Great thread! Especially right now, when the numbers on my scale are just creeping up on me, even though I've been sticking to plan... sigh.
I'm another person pretty motivated by size. I bought a pair of pants that I love in my goal size, and I'm taking progress pictures in them, too. Still not close to fitting them, though.
My other non-scale goal is a bit of a joke with my boyfriend. I've pledged to beat him at arm wrestling.