During the visitors' entry to the virtual world, a graphic composed of green and white letters is seen; the white letters spell out phrases that old people might say, like "get off my lawn", "my knee hurts", "did I already take my pills" and "my grandson's a doctor".
The virtual retirement community is Trop Vieux Manor - 'trop vieux' is French for 'too old'.
Upon seeing the interior of the Near-Death Star, Fry gasps, "My God! It's full of geezers!", parodying the last message sent by astronaut Dave Bowman in the 1984 sequel to 2001: A Space Odyssey, 2010: The Year We Make Contact. Bowman's line, "My God! It's full of stars!" is repeated several times in the film.
Teenage Hubert's bedroom has a poster of Braino on the wall; the poster parodies a famous photo of Albert Einstein, sticking out his tongue.
As discussed by Leela, Fry and Bender, the Near-Death Star references The Matrix in its use of human bodies as batteries.
During the 'fun with Gram-Gram & Shabadoo' montage, as Fry gives a holophonor recital, the Professor is seen on a catwalk backstage, flourishing a cape, similar to the Phantom of the Opera.