Been on a bit of a taco bender lately and these are some of the best in Madison. The 3 taco plate with rice/beans is an awesome deal for the amount/quality of food you get. The main menu is posted on the wall with a special board right next to it. We visited on a Tuesday when the taco platter was $8.50 and maybe a $1 taco special as well (?), but the board was a little unclear. If the special comes with a can of soda or bottle of water make sure you grab only one of those and not a glass bottle of soda (which we did and ended up paying extra for the drinks anyway). Cooler of beer is available too.
Service is awesomely helpful, plenty of seating, very clean and bright dining room. The tacos will definitely keep us coming back - the carnitas in particular were incredible. We tried the chips & guac as well; chips were warm and plentiful and the guac was a little flavorless. I'd love to try some of the weekend specials, if I can pass up the tacos!