During the dinner with Quagmire in the alternate present time line, Lois references Mad TV. Alex Borstein, who voices Lois, was a regular on Mad TV for years.
The song playing as Lois walks to the diving board is Mr. Night by Kenny Loggins. It is the same music used in the scene from Caddyshack (1980) to which this was done as an homage.
Death takes Peter back to 1984, when Peter was 18. If you do the maths, Peter was born in 1966.
When Brian is talking about having flying cars in alternate future of Peter and Brian it cuts to the opening scene from the Jetsons (Seth McFarlane) voice of Peter and Brian was a staff writer for Hanna Barbera Which produced the Jetsons
There are reference to " Back to the Future" and "Back to the Future Part II".