In the bookstore, there is a book entitled "A Match Made In Space" by George McFly. This is a fictional book from the movie Back to the Future (1985).
In the Hungarian dub, Gregor is from Hamburg, Germany. This replaces the 'hungry-Hungary' gag with a 'hamburger-Hamburg' gag.
Even Though This Episode Premiered In 2006 It Was Made In 2005 According To The Credits