The title of the episode is a spoof of the Paul Simon song Graceland, in which the lyrics "I'm goin' to Graceland" are present.
The Christian theme park is likely inspired by Holy Land, USA, a biblical-themed park in Waterbury, Connecticut that was open to visitors from 1955 to 1984. Although the park is closed, the lit up 50 foot cross is easily visible from both route 8 and Interstate 84
Comic Book Guy's dream parodies Star Trek, Catwoman and Agent 99 (Get Smart TV series). Coincidentally, actress Anne Hathaway portrayed both characters in Get Smart and The Dark Knight Rises.