Although at the beginning Homer is shown to have never been awarded Employee of the Month, losing out to an inanimate carbon rod, he was actually made Employee of the Month in episode 305, Homer Defined, after averting the core meltdown.
In the Simpsons tapped out level 23 The hail ants sign can be used as a decoration.
When the Simpson family comes to NASA, it refers to the movie Out of Towners.
When the NASA scientists watch the clip of Home Improvement, Tim Taylor says, "Looks like it's back to jail for me" after running over his neighbor, Wilson. Tim Taylor was played by Tim Allen, who actually spent two years in a Minnesota prison for cocaine possession in the 70's.