Good ideas gone wrong: Tony claims that the Trek 660 has the ugliest seat-cluster ever. Maybe. mw and I think the Heron merits this honor. I'll admit that the Trek is...ahhh...heavy-handed, but the Heron is also ham-fisted and chunky, PLUS it only lines up with the seat stay on one size, which I feel gives it an edge.
Vote early and vote often, or nominate your other contenders.