Nice Tex-Mex Dive in downtown Round Rock.
I took my wife here last weekend when she wanted to try someplace new to her. I had been here years ago as a kid and remember it being pretty good. The food was very good. The queso with guacamole and ground beef was delicious. My wife had the tacos and I had the Georgetown combo meal, both were good. The large margaritas were VERY good, however, next time we'll use a top shelf tequila, because the headaches came quickly after just one margarita. Overall, it's a nice, small tem-mex place near home for us, and we'll definitely go back.