Cheap beer! Need I say more? 4L for 20$ and even cheaper during the happy hours!
Been there twice but the service was downright appalling. ordered some fries which flew in nigh near the end of my 4L pitcher. Perhaps that's alright for a tavern in Scotland in the middle ages but you don't get to smack the server. Maybe it was because I tipped 15% - their fault for not taking cards.