Harry (Elliott Gould) mentioned to Judy (Linda Lavin) about seeing Barbra Streisand in concert. In real life, Elliott Gould is Barbra Streisand's ex-husband).
The Atlantic Grill on 3rd Ave. (where they originally plan to have dinner) is an actual restaurant on NY's Upper East Side.
"Not Nana" comes from the Shady Pines nursing home. This is the same name as the nursing home Sophia Petrillo lived in on The Golden Girls.