Basically just a sports bar with enough room for people to dance as well. Cover is free for 21+ and typically $3 - $5 for under 21. There're two stories to this joint, but it still gets extremely packed on weekends which makes it very hard to get anywhere without several random people grinding up on you or getting spilled on/spilling some of your drink because someone's shoving past you. As they've sacrificed sitting space for their pseudo-dance floor, there isn't really anywhere to sit, especially if you don't get there early to claim a table/booth (on the first floor at least; they have more seating on the second level).
Note of caution: it takes forever just to get in since the line gets really long unless you go a little earlier in the night. Other than that though, it's pretty fun. A lot less seedy than some other campus bars such as Kam's or C.O.'s, and they have pretty good specials here.