The Traveling Christmas
S6:E12
1978
IMDb
When Keith's Scrooge-like boss at the taxi-cab company won't give him Christmas off, the Evans family brings their Christmas party to Keith and holds at the company. J.J. hosts the festvities and it features Michael singing, Bookman (dressed as Santa) dancing, Keith doing impersonations & the girls (Florida, Penny, Willona & Thelma) portraying ""The Pointless Sisters"" doing ""Steam Heat"".