A Les Paul.
Specifically an LPC style one.
I've had/got pretty much everything I've ever fancied (generally, not talking specific models). Strats, Superstrats, RGs, Explorers, V's etc... Had'em all. Never owned a Les Paul, but whenever I get to play on one (a good one, that is) I always come away really wanting one.
At the moment, since modern Gibsons are overpriced and fairly average guitars, I'm really loving the look of LTD's EC-1000 range. Particuarly the 'Traditional' models (full body thickness, no tummy cuts, gloss instead of matte)
Anybody tried one of these bad boys?