Futurama

Philip J. Fry

Turanga Leela

Bender

Linda

Hermes Conrad

Amy Wong

Morbo

Scruffy

Futurama was the name of the famous General Motors exhibit at the 1939 New York World's Fair that depicted a futuristic landscape.

As the opening credits cut to the final shot, just before the Planet Express Ship crashes, several characters are seen moving through one of the transport tubes. The very first guy to go through is reading a news paper, the headline reads, "Moon pie fight in Mars Bar."

In one episode it is said that they can translate the second alien language, but only into beta crypt 3, a language so complex that it is even less likely to understand, this is an inside joke, because the second alien language is in fact beta crypt 2 with symbols replacing the initial alphabet.

In Season 4 Episode 12 "Where No Fan Has Gone Before" Fry mentions the Star Trek films attracts negative attention because the show was banned long before then, and apparently saying the show's name is forbidden. In Season 3 Episode 8 "That's Lobstertainment!" at an Oscar awards ceremony a featured film is titled "Star Trek: The Pepsi Generation" and no mention of Star Trek being forbidden is made.

The elements Bender claims to be constructed out of change throughout the series (though given Bender's nature, it's possible he's lying). This became an in-joke amongst the writers in later episodes.

Some of the heads (in jars) are not anchored down, generally these should float.

Professor Hubert Farnsworth: No! I was about to close the deal!

Professor Hubert Farnsworth: Sweet zombie Jesus!

Professor Hubert Farnsworth: Good news everyone!