Mitzies is life. I work across the street and am devastated that we'll be moving offices soon, as that means I won't get my Mitzies fix anymore.
The lunch specials are such a great deal, $7 for a container of rice and beans, chicken (stew, jerk, fried, or bbq) and a drink. I love the fried chicken and the stew is good on a cold day. For sides, the cole slaw is a must, and the plantain too. Keep in mind that there's usually a long line and wait for the food during lunch time.
After hours, I'll get the ox tail when I want something bigger and heartier. Haven't tried the roti but have heard amazing things about it.