For pure sexy:
P-51B pre-Malcom Hood (LOVE the views, hate the bulging cyst look)
Re-2005 - tweren't many built, but love its lines nonetheless...
A-26 Invader - Haven't been able to fly one since the Air Warrior days... beautiful bird.
Mossie Mk Whatever - Just a fine looking ride
Bf-109F Series - Always loved em
Evokers of Deady:
FW-190A/F (Radial Engines) - Dunno if it's from watching WW2 movies as a kid, but these have always ranked up there for me
ME-262 - Nuff Said
F4U - Somethin about those gull wings....
Tough SOBs (Looking, anyway)
P-47 - It's the JUG man... but the bubble canopy kind of detracted from the burliness imho...
Ju-52 - Yeah, I know it's a transport plane... but nothing says COME AND GET PAPA BEAR like a tri-motor schoolbus with big bellybutton radiator rings, fixed landing gear, and an iron cross on the side.
Typhoon - Maybe it's the big ole' gaping like a 97 year old man intake on the front...