Jose's Blue Sombrero offers a good balance of authentic Mexican food and Americanized Mexican food. I've never left there feeling that I didn't have a great meal.
Jose's offers a great menu with something on it for just about everyone. The burritos and chimichangas are my personal recommendations. They have a great stuffed Chile Releno, also.
The atmosphere at Jose's is energetic and comfortable. If you are looking for a nice quiet night out, this may not be the place, since the music is usually loud or there is a live Mariachi Band.
If you are in the mood for Margaritas, Jose's is the place to get them.