You're gonna hear it a million times, but I'll say it here first: this is basically the Happy Dog of tacos.
You get a little check sheet with all of their available ingredients and you can build your own taco for $3. The ingredients are all fresh and tasty and there are plenty of ways to make your taco vegetarian or vegan. They have awesome chips, guac, and queso that you can make a sampler platter out of.
I had two specialty drinks- both of which were served in Ball glass jars- a nice touch in my book. They weren't too sweet and had quality ingredients, but were a little pricier than I prefer for a drink ($8-$9.)
The waitstaff was very attentive and sweet. They're also open until 2am for all of your non-fastfoody 4th meal needs!
Great patio, beautiful bar, totally destined to become super crowded and full of whiny white suburban folk who will probably force management to change the Spanish words on the menu to English. Its gonna blow up once it catches on- get there fast!