There was really nothing better than burrito night this past year, and it happened at least twice a week. Your options on this one are pretty much unlimited, but I'll get you some basics:
1 package of wheat wraps (make sure they're big enough to roll up)
1 c brown rice
1 can black beans
1 package of shredded taco cheese
Hot Sauce (I recommend Crystal Hot Sauce, it depends on how hot you can handle it)
Start with the rice. This takes longest, especially if it's bagged. Brown rice is better for you than white, and any bagged rice is better than minute rice. 1 cup should be enough to fill about 5 burritos.
If you have vegetables, I'd recommend sautéing them. Throw some sliced mushrooms and zucchini and peppers in a pan for about 10 minutes over medium heat. Once they brown a bit, they're done.
Black beans in a can are usually microwavable. Put them in a rubber-maid container and heat for 2-3 min.
I also microwave my tortillas for 15-30 seconds to get them flexible. Once everything is done, throw a spoonful of each ingredient in the tortilla, flip the sides over and roll. You'd be surprised how cheap and delicious this one is.
This recipe takes about 30 minutes due to the rice cooking. If you have an apartment full of starving roommates, they will appreciate this one. I frequently have rice and beans left over. Toss the mix in a container, and use it for lunch the next day.