SpongeBob's first words were, "May I take your order?"
Squidward makes various references to eleven minutes. This is because every episode lasts approximately eleven and a half minutes.
The first episode aired (Bubble Stand/Ripped Pants) was, in fact, the second episode made. The pilot episode was "Help Wanted/Reef Blower/Tea at the Treedome" in which Spongebob gets his job at the Krusty Krab and meets his friend Sandy.
Tom Kenny said he came up with the voice of SBSP, when he heard an angry dwarf yelling.
The German title of this show is "SpongeBob Schwammkopf" which means "SpongeBob SpongeHead".
Mr. Krab's date of birth is 30 November 1942. Spongebob's is 14 July 1986 as revealed on each characters driving license in dream sequences in the Season 1 episode "Sleepy Time".
SpongeBob lives at 124 Conch Street.
SpongeBob was originally named SpongeBoy but that name was already trademarked.
Mr. Krabs lives at 3541 Anchor Way.
The episodes "SB-129" and "Krusty Krab Training Video" feature the credits on a space and a black background, respectively, instead of the traditional underwater background.
In Korea Sponge Bob is referred to as "Square Square Sponge" or, quite often, "Square Square Sponge Song" (in the title song they needed four words to match the music and most children refer to him the second way).
Mr. Krabs first name is Eugene. His rival, Plankton, is named Sheldon.
The signal flags hanging on the front of The Krusty Krab do not spell a word. In fact, the third signal flag (from left to right as you face the front door) does not exist in international nautical code. The first, second, fourth and fifth are R, I, U, and K respectively, although the U is only "right-side-up" if you read the flags from right-to-left. Inside Mr. Krab's office is _, I, R, and M. The _ has no letter associated with the flag
Stephen Hillenburg, the creator of the show is a marine biologist, and presented his idea for the show to Nickelodeon in a bizarre way: He brought in a fish tank into the board room and explained what was living inside. He then placed a cartoon drawing of SpongeBob into the tank and said "This is SpongeBob, the star of your new show."
SpikeTV approached Stephen Hillenburg to do an "Adult" version of the show for their adult animation block. The show was to be similar in concept to Ren and Stimpy Adult Party Cartoon, Hillenburg refused to do it and Nick refused to sell the rights to SpikeTV.
In the "Big Pink Loser" episode, we learn that Patrick's last name is Star.
Mermaid Man's Invisible Boatmobile is a 1959 Cadillac.
To create Spongebob's distinctive laugh, Tom Kenny hits his throat with his hand repeatedly while saying, "Ahh."
According to concept art, the "Krabby Patty" was originally going to be called the "Barnacle Burger".
Mr. Krabs's Fishing boat is called the SS Cheapskate.
Every time a license is seen, Spongebob says something about a mustache.
The name of Patrick's parents are Herb and Margie.
While Stephen Hillenburg was a director for Rocko's Modern Life, he showed the show's writer 'Martin Olson' a comic book called "The Intertidal Zone" that Hillenburg drew in college. Olson loved it and suggested that Stephen rewrite it as an undersea cartoon series, which became Spongebob Squarepants.
Almost every time a character throws something away you can hear a glass breaking.
Whenever havoc is wreaked, you almost always hear a man (fish) cry, "My Leg!" among the chaos.
Season One was the only season of the show to use traditional cel-animation. In season two they started to ink, paint and edit it digitally.
Spongebob is ambidextrous, meaning he is able to write with both hands.