This is a must stop for most students, and the perfect after-hours meetup spot after spending the entire day in the lab. 8/10 you'll find a seat, so that's a plus given the oft crowded union. It's great you can grab a beer here, something my undergrad institution didn't offer. When in Wisconsin!
Their battered fries are the sirens call, the burger charred and juicy. Third place would be their chicken sandwich. When you want to pretend to be healthy, you can get a side of carrots instead. I ordered the boneless wings once (with fries, obvi) and next time I would get them without sauce. They put way too much on, it costs an extra $1, and it is way too salty. Just grab a side of ranch, mustard, or BBQ at the free condiments station!