Entertainment : 5 things you didn't know about SpongeBob Squarepants

1. SpongeBob's name was originally supposed to be SpongeBoy, but bizarrely, the name was already copyrighted for a mop.
2. Patrick has a sister named Sam. She mostly makes grunting noises.
3. Alec Baldwin , Alton Brown, Amy Poehler, Christopher Guest, David Bowie, David Hasselhoff, Davy Jones , Gene Simmons, Johnny Depp, Mark Hamill, Pat Morita, Scarlett Johansson, and Ray Liotta have all lent their voices for the cartoon.
4. US President Barack Obama is a fan of the cartoon.
5. Squidward lacks the proper number of tentacles to be a squid or an octopus.