• Large segments of the episode make direct reference to the TV show M*A*S*H*. The M*A*S*H* theme is played over the establishing shot of the field hospital, and the surgeon robot, iHawk speaks in the voice of Alan Alda as Hawkeye Pierce.
  • Todd Susman, the original voice of P.A. announcer in M*A*S*H, replays that voice in this episode.
  • Fry trains with a hovering drone in a reference to Luke Skywalker's lightsaber training on the Millennium Falcon in the movie Star Wars Episode IV: A New Hope, only here, the drone is actually a pinata.
  • This is the second time Fry sings Walking on Sunshine, if you include his gargling performance in I, Roommate
  • According to the commentary, the original line in the New New York Post's headline was "Earth Licks Balls!". This was deemed "going too far".
  • Fry rides one of the balls like a space hopper.
  • The "Alien Weapons" used by the soldiers in this episode are charged up by winding up the crank (like a jack-in-the-box) on the weapon; the tune they play while winding is a jack-in-the-box standard, Pop Goes The Weasel.
  • Zapp Brannigan shows Fry and Leela Bender's Top Ten most used words in a similar way to David Letterman's Top Ten. These ten words are 10. Chump 9. Chumpette 8. Yours 7. Up 6. Pimpmobile 5. Bite 4. My 3. Shiny 2. Daffodil and 1. Ass.

Bender says all 10 of these words throughtout the episode. Bender says "hot diggity daffodil" and "I'm catching the next pimpmobile out of here."