I really like eddies. Their beer selection is the best that I've found in the Madison area. The food overall is probably sub par, HOWEVER the burgers are awesome. If you want a burger and a couple of beers this is the place to go. I've been looking for a similar place in town but have had no such luck.
Oh, the best bartender by far is Glenn, all others are just average. Good people, awesome beer, and great burgers. Keep expectations in line and you will not be disappointed!