Transcendent, single dishes at restaurants

So, I got so tired of my tech job that I decided to take the whole darn week off just because I can. And while I like the nice, long meals that SF has to offer, those need some prep and leave you pretty full. So I thought I'd rather sample across the city.

So, sf-reddit, what are your single favorite dishes at which restaurants?

It doesn't matter if everythng else at the restaurant is also good, or if everything else sucks, as long as that one dish is amazing. Also doesn't matter what size that dish is, whether it will fill me up, or anything else. No dietary restrictions, all cuisines welcome!

Edit: wow, do you guys deliver! I may need to quit this damn job and do one item, two times a day for a year! Please keep them coming!