The monument outside where Norm takes the survey is the Boston's Soldiers' and Sailors' Monument of 1877, which served as a model for Civil War monuments across the country. It was also one of the first to memorialize ordinary foot soldiers. Located on Flagstaff Hill in Boston Common.
The second beer taster played the Gary's Old Town Tavern bartender in the Bar Wars VI episode.
When Sam comes over to Rebecca while she's playing the slot machine, she tells him that she's pulled the lever 578 times. This means that by that time she spent $28.90 in nickels.
Carla is wearing slot machine earrings.
Woody delivers the message that the show is filmed in front of a live studio audience but does not appear in the episode