Ok, so I've only been here on Sunday mornings for hangover cures, so I have no idea about a normal visit or a late night visit. But if you're looking for a quick bite to eat that will somewhat help cure your hangover woes, then they have the breakfast to help you out.
They have all of your normal breakfast fare, from omelets to bloody marys (if you can still stand the thought of alcohol). The food here is actually better than I thought a sports bar would have, I think you'll be surprised like I was. There really isn't anything like a big, hardy, greasy breakfast to get your day going after a long night out in the big city.
The atmosphere is nice as well, as they have plenty of tvs throughout the place for great viewing of any sporting event going on. I really like the patio area, which borders 7th street so you can traffic watch while eating or drinking. I can see this place as a great hangout spot during a relaxing evening outside of the uptown bars & restaurants.
Jackalope Jack's will take your hangover & attempt to squash it. They do a pretty good job with their breakfasts here & you get a lot of food for the price. The place isn't really ever too busy during the late morning/early afternoon hours, so you should get seating pretty quickly. Check it out after a long night out & you'll be pleasantly surprised.