SPONGEBOB SQUAREPANTS MARATHON
Nickelodeon, 9:00 a.m. ET
It’s an all-day marathon of SpongeBob episodes, leading up to a brand new installment at 8 p.m. ET. It’s titled “Extreme Spots,” and that’s not a typo – just an Olympic-timed spoof of extreme sports, with reckless daredevil Johnny Knoxville guest starring as an extremely extreme competitor named Johnny Krill.