"J" is Matt Groening's favorite middle initial in tribute to Jay Ward, creator of Rocky and Bullwinkle (Bullwinkle J. Moose) and other classics; hence the "J" in Philip J. Fry, Hubert J. Farnsworth, Cubert J. Farnsworth, Homer J. Simpson, Abraham J. Simpson, and Bart J. Simpson.
Planet Express - Our crew is replaceable, your package isn't.
TV Announcer: Futurama is brought to you by: Glagnar's Human Rinds - It's a buncha, muncha, cruncha... human.
TV Announcer: Lightspeed Briefs - Style and comfort for the discriminating crotch.
In many episodes the Earth's knowledge of things that have happened in the past is lacking, due to an apparent loss of historical documents throughout time (for example, in Season 1 Episode 2 "The Series Has Landed" it is made clear humans don't know the exact details of the first moon landing, or in Season 5 Episode 2 "Jurassic Bark" it is unclear how a 20th century pizzeria operated,) yet many people from Fry's time period are still alive, such as Richard Nixon or Leonard Nimoy's head. Also, even though characters do not know the details of important events in or before the 20th century, many characters make references to popular songs of the past (William Shatner in Season 4 Episode 12 "Where No Fan Has Gone Before", Kif in Season 3 Episode 5 "Amazon Women In The Mood".)
Occasionally, before the opening credit sequence begins, the show will be "sponsored" by a futuristic sponsor advertisement. For example, "Futurama is brought to you by Glagnar's Human Rinds." The show always begins with a parody of the "Transmitted in SAP" type of show disclaimers when the title "Futurama" appears. For example, "As Seen on TV" or "Present in BC (Brain Control) Where Available".
Originally, one episode had a scene where Fry pulls down his pants and moons the business magnate Mom (of Mom's Friendly Robots). Her original dialogue was, "You call that an anus?", but it only appeared in closed captioning and was redubbed with "You call that a pressed ham?".