I worked here a long time ago, and went back for brunch this summer. It's only gotten better! We ended up going back a second time one week later.
The menu is a little simpler than I remember, but I think the quality is even higher than before. I got the huevos rancheros the first time. Not a massive portion, but phenomenal flavor. Very unique. The second time, I got the breakfast sandwich. Insanely good. I would get either of those again.
My wife got the house-smoked whitefish benedict the first time and the honey and ricotta pancakes the next. She still raves about both.
Service can be a bit slow and portions are not huge, but those are the only potential drawbacks, depending on what you're looking for. The staff is engaging and classy, the atmosphere feels upscale (yet you won't feel out of place wearing basketball shorts and a t-shirt), and the overall experience is always very satisfying.
They make their own gelato and sorbetto, which is the best I've had. Lighter, yet richer, compared to other American gelato I've had. You can stop in just for this, if you like.
The coffee and espresso drinks are very good.
They now serve alcohol. We didn't do any drinking when we were there, but the drink menu looked intriguing.
You can spend some time next door at the American Spoon retail store, sampling jams, salsas, and other awesome stuff. Their products are expensive, but extremely good.