Realization about Nick I can't figure out if this is super obvious and I am the only one who took forever to realize it, or if I've discovered something great.  In Season 6, Episode 6 "Ready" Nick can't figure out why Donovan is attractive and holds up a picture of Ted Danson saying that he knows Ted (as Sam Malone) is the most attractive man because a magazine told him so.

Nick completely based his job and looks after Danson's character in Cheers because that's his idea of attractive. 