I had a birthday dinner recently at Mazza Garden in Ajax and had a great time. The food is authentic middle eastern (with a Lebanese emphasis) and is fresh and delicious. There were four of us (including one vegetarian) and the waiter suggested we get the prix fixe menu which was around $20 per person and had something like 10 vegetarian dishes and a few meat dishes. The tabletop was literally filled with food! So many different dishes, some new (the middle eastern equivalent of steak tartare was fabulous) and some I have tried before. All in all it is tremendous value for a great meal.
On the weekend they have an entertainer and a belly dancer which usually starts at 10pm. They also have shisha pipes.