People tend to check in during these times:
I come here for the Indian box - reasonably priced and huge portions!
There's a little alcove by the stairs to the third floor theater. It's a great place to get a nap in or even some reading if there's enough light.
U of C: University of Cosby sweaters
Play pool at the Hollow Grounds cafe on the 2nd floor.
Get your hair cut by the old men in the basement
Rumor has it that if you step on the seal you will enter a portal into the world of Doom II with all the cheat codes on. It's scarier than it sounds.
Rumor has it that if you step on the gold seal on the floor of the Reynolds Club, you will not graduate in four years.
Try the Indian food here, good and good price for the quantity served!
Avoid lunchtime at Subway. It's a mob scene.
Avoid the sushi (it's worse than supermarket sushi)