Three things:
1. I fucking despise lines. I will pay money, I will forgo comfort, I will give up on a thing I want, if a Line is an obstacle. I'm the jabroni paying VIP entrance to clubs not because I want to be cool, but because I can't be fucked to stand in a line. I won't do it. I'll go hungry before I stand in a line. I bought a motorcycle so I could skip car lines.
2. I'm a food snob.
3. I've traveled a lot. Combined with (2) this means I eat as much as I can all over the world because I have a passion for food and I want to eat the best before I die.
Bearing those things in mind, know this: Bi-Rite creamery is the best ice cream I have ever had in my life, and I will stand in line for an hour for it. It is worth the line and my god there are few things in life I will say that about.
EDIT: By the way protip, you can skip the line if you get a pint. So... I kind of cheat now, when I go I just buy like 5 pints of different flavors :P
Also Ice Cream Bar has better stuff. Fight me! :P
But yup, my GF and I actually took a day off work on a Tuesday specifically for bi-rite. Made the trip up all the way from South Bay. Worth.
https://missionlocal.org/2015/06/san-francisco-ice-cream-is-...
http://strausfamilycreamery.com/products/item/organic-wholes...
Because of the pasteurization requirement, you can't legally buy the best ice cream in the world in California -- compare the taste of Straus milk to milk straight out of a cow.
Other SF shops have much more creative flavors these days, if that's more your thing.
They're not "special" but they do have some interesting flavors which are regular flavors in other parts of the world (mung bean or mango, etc) rather than going for "unique/experimental" flavors.
Mostly it was regular blue collar SF. Not trendseeking foodsnobs.
I miss the days when food was food and people didn't compete over being trendier than thou.
I didn't know it at the time but this was the exact reason I moved to SF.
To be fair, I have yet to have good brunch at a restaurant where there was no wait on a Saturday or Sunday morning. When there are more people who want brunch than there are places offering brunch, you'd posit that places without a wait don't have good brunch.