In Henry's room, there is a poster of E.T. on his wall.
The song Roger sings in the attic, "when I was his alien," is a reference to the song "when somebody loved me" from the movie Toy Story 2.
When Roger is crossing a busy motorway he is clearly seen drinking a bottle of Joe Daniello's Whiskey, a spoof version of Jack Daniel's and a play on the director. In the same scene, Stan Smith can also be seen driving behind Roger wearing his suit and driving his SUV.
Newspaper Headline: "Homemade valentine proves thought doesn't count"
The name of the boy Roger meets is Henry. In the film E.T., Henry Thomas is the name of the boy who E.T. meets.