I Nominate (posthumously??) The Architect's bike.
I dunno if he's ever been nominated and I know that his bike isn't exactly "whole" at this point, but it was once and I don't think I'm exaggerating when I say that a LOT of peeps on this forum (including myself) drew inspiration from this build.
I don't think that his bike's styling is to everyone's taste, but its unique enough and creative enough and DAMN is it clean! This bike was built with real dedication and a meticulous attention to detail.