Interesting! I noticed earlier today that my 5 bass rack has exclusively 5 tele/51-53 Precision headstocks sticking out of it at the momentIt'd be a crime not to say the 4001/4003 in my book. Other than that I'm going to have to hand it to the Ernie Ball stingray. Both unique looking but timeless.
That being said; The Thunderbird headstock is amazing to me, with the beveling and tilt and all that. Notably the bicentennial or epi 60s. Rickenbacker is ofcourse very iconic, as is the gibson open book headstock with 4 giant tuners poking out.
But lets not forget, the standard Fender headstock. Figurative wars were fought over that
