My Thai restaurant in Marina is a great place to go for a quick lunch. For the amount of food you get, the price is pretty reasonable as well (generally $7-10 per person). The food is flavorful and you get to pick the spice level (mild, medium or hot) for any dish that you order.
I had the green curry chicken and just can't recommend it enough. I ordered it medium spicy, and definitely had a big kick to it. However, the creaminess of the coconut milk in the sauce provided the perfect accompaniment to the spice. With each dish, you get a large scoop of steamed rice, a bowl of vegetable soup and a salad (really just some lettuce with dressing tossed on it).
The only downside of this restaurant is its size - it is very small! The dining area seats probably 20-25 people at most. The service is fast, but at the height of lunch, the servers just can't get that food out fast enough to keep up. You won't see a big line waiting for tables, though, because there isn't a single extra parking place in the lot! The parking lot has maybe 9 slots, which is rarely enough for the number of customers they receive. The food is amazing, though, and worth the wait for a parking space!