According to an internet search, there are 247 panels in the Celtic's floor held down by 988 bolts.
The Celtics invited the cast to a game at Boston Garden after this episode aired. The game was against the Pistons, but the cast was not seated together. A panoramic photo of this game is sold as a poster. If you look closely at the crowd near the court, all five male cast members can be identified. John Ratzenberger is in the first row immediately behind the left basket. Woody Harrelson is in the corner seat of the right side baseline. 'George Wendt' is near the right side basket, Kelsey Grammer is in the left near corner in profile.
Glenn Ordway, who can be briefly seen as the TV Sportscaster trying to interview Kevin McHale, actually was a Radio Broadcaster for the Celtics at the time.
Cliff mentions the blue =prints are for the new Boston Garden design. The original Boston Garden opened in 1928 and closed in 1995. It was demolished in 1998. The new Arena, TD Garden broke ground in 1993 and opened in 1995.
The title is from the 1960's protest song "Where Have All the Flowers Gone?" written by Pete Seeger and Joe Hickerson.