Visible crew/equipment: When Karen stands by the pillar she says "I want to talk to Ja...Wi...Rosario" and as she does, Jack and Will step forward. Anyway, you can see two white tape markers on the floor which they stop at. (01:13:50)
My Best Friend's Tush - S2-E22
Visible crew/equipment: When Jack is telling Will he's so happy he's going to help him with his new product, they are standing in front of a painting. As Will stands up, you can see a cameraman reflected in the glass. (00:06:45)
Acting Out - S2-E14
Visible crew/equipment: As Will and Jack walk along the street, out of NBC, in one shot as they walk along you can see the cameraman with a camera over his shoulder walking along with them, reflected in the store windows. (00:16:50)
Visible crew/equipment: After Will and Jack come back from the patio area, into the thanksgiving dinner area, the grey boom mike can be seen reflected in the frosted glass panel above the living room door. (01:18:20)
Visible crew/equipment: As Will talks with Jack about the marriage to Rosario, the studio behind the cameras is reflected on the silver set piece behind Will.
Answer: A history of the game can be found at http://www.fast-rewind.com/bacon.htm.
J I Cohen