It's the fish I judge all sushi restaurants by. If I've not eaten there previously, I'll order a beer and a negi-hama roll...the first bite is usually a pretty good indicator of how the rest of the meal will go. I've only had to leave after the "first-roll test" a handful of times, and most of those were because the house was trying to pass off Escolar as Hamachi.
Hamachi kama, Hamachi toro, negihama, poke, aguachile...so many different and tasty ways to prep my favorite fish to eat