I'm a falafel freak and Daou has one of the best falafel in pita in the city. The falafel balls are always fresh and the whole thing has a great tahini/lemon flavor. It's a big sandwich and I usually order it to go as a whole meal. I'm a vegetarian (they also have fab fatoush and taboule salad) but I when I've brought meat lovers there they are happy.  I've been going there for a good 15 years. Be warned that it is a bit noisy if you eat there and there are lots of people - but the food is fab.