Maybe not the BEST, but one of the most memorable players I've ever watched in person is Dustin Byfuglien.
It's really something watching a monster that size skate like the wind, shrug off checks from grown ass hockey players like it's mosquitoes being a bit of a bother, and then being able to turn on a dime to cleanly demolish guys (but still getting called penalties for basically hitting too hard).
It's like a tank having a baby with a ballerina.
Yeah, he wasn't the most defensively sound player but my god was he ever noticeable always.