Thai Tai is a good fast food standby on 17th Ave. The Vietnamese-style subs are awesome - my favorite is the satay chicken. They use bread which is soft yet crusty on the exterior, and pass it through a broiler to get everything warm and toasty. The portion of chicken they put on is perfect - about equal to the amount of veggies when you get it loaded with all the toppings. I've tried the sate noodle soups and they are pretty good too, with a good balance of heat.
There are no tables, so it's a great place to do take-away. The lineups can get long on late weekend evenings when everyone's indulgence in alcohol has led to a craving for subs. Other times, it's not as busy but it may take a few minutes to get your order. This is fast food, not FAST food.
In terms of taste and value, I'll take a sub from Thai Thi's over one from subway any day.
Review #10 of Yelp's 30 Day Review Challenge 2012