Insomnia Cookies opened a location in New York City in April 2008 and specializes in baking delicious cookies for the late night eaters with a sweet tooth. Seems like a good idea to me! The business actually started out on college campuses like Michigan, OSU and PSU, and has recently moved into NYC. The shop is open all week long, but offers delivery service from 8pm until 3am! I'm not sure of the minimum number of cookies you have to order to get delivery, I find it hard to imagine you could just order one.
If I had a choice, I'd make Billy's Cupcakes deliverable. Granted, the shop is only 2 blocks away from me, but when you live in a 6 floor walk up you take for every chance you get to skip the stairs. If you could make anything deliverable, what would you order?