Caribou's is a perfect example of an old-style neighborhood tavern. It's dark, cool, inexpensive and the long bar is seated with up pretty much with locals who all know each other. Everyone was friendly and pleasant, the bartender was attentive, and the beer was inexpensive.
I did go for the burger and found it good but not great. In my case it was cooked a little too long and came out more medium-well than medium-rare, but it was a busy night and the lone bartender was also the lone cook so that's the factor I attribute it to. It's a burger with a good bun, cheese, grilled onions and that's it. I like lettuce and tomato and view that as a standard complement, so its absence here is strange to me. Still, it is good in its simplicity and very inexpensive.
Caribou's a nice little place for a beer and a snack while watching the game. Enjoy it.