I'm a sucker for margaritas and guacamole, and frequenting Mad Mex is one of my favorite pastimes from my college days at Pitt. Came here for dinner a couple weeks ago and the food and margaritas were just as I remembered. I had a mango margarita and my favorite meal, the Mahi-Mahi salad. Both were delicious and filling.
It wasn't very busy so we were seated right away and the waiter was very attentive.
Mad Mex is still one of my favorite places to eat whenever I'm in Pittsburgh :-)