I finally tried Las Palmas this weekend, and it lived up to its excellent reputation! It was unseasonably cold, so there wasn't any sort of a line out front. My boyfriend and I walked right in and paid for three tacos each at the counter before being served outside.
As stated in other reviews, the tacos cost $2.50 each and are very generous. You get unlimited toppings (salsas, hot sauces, onions, cilantro, etc) from the topping bar. We sampled the lamb and the shredded BBQ beef. The beef was my favorite, since the flavor was richer and it was easier to eat. The lamb was a bit fattier and more chunky, but still very good. I was hungry but not overly so, and two tacos with a beer back at home were quite filling enough for me. I could see myself eating three after a long run or a hard workout. I can't wait to come back...most likely next weekend!