Spongebob Squarepants 20th Anniversary. On a brisk morning in february, the members of the voice cast of nickelodeon ’s flagship animated series “ spongebob squarepants ” gathered to work on a new episode, like they’ve done most. Spongebob squarepants’ 20 years of brilliance, explained in 3 episodes.

Nickelodeon’s iconic series, spongebob squarepants, has reached it’s 20th anniversary, and the network is celebrating the “best year ever” starting today, with a. There’s no better way to show your love for spongebob squarepants than with the 20th anniversary collection!