Could you watch 500 episodes of The Simpsons in a row? As in 24/7 nonstop?
That's what hardcore fans are doing in Hollywood, trying to beat the Guinness world record for TV viewing.
The Simpsons Ultimate Fan Marathon Challenge started Wednesday (Feb. 8) at 5 p.m. ET with 100 contenders, and two nights later, just 29 diehards were still in the mix watching episodes from Season 7. They'll need to keep going two more days to beat the record -- and they still won't be anywhere near 500.