S20E18The Simpsons season 20 episode 18: Father Knows Worst
Aired 26 April 200923 minRated TV-PG
Where to watch The Simpsons Season 20 in Australia
The Simpsons season 20 is streaming in Australia on Disney+ (subscription, listed for the whole show). You can also buy it on Apple TV from $24.99.
We may earn a commission when you sign up through our links. How we make money.
Stream (subscription)
Stream Now on Disney+Disney+
Subscription · Listed for the whole show
From $9.99/mth
Buy or rent
Stream now on Apple TVApple TV
Buy
Buy from $24.99 a season
Availability checked 16 November 2026.
What happens in “Father Knows Worst”
Bart and Lisa start struggling in their academic and social lives at school and Homer starts monitoring them and forcing them to do better. Meanwhile, Marge discovers a sauna in the basement.
Episode summary: TMDB.
Before you watch
- It is episode 18 of 21 of season 20, so watch episodes 1 to 17 first.
- It runs about 23 minutes.
- Directed by Matthew Nastuk, written by Rob LaZebnik.
- TMDB users rate it 6.8 out of 10 (28 votes).
The Simpsons trailer
The official trailer for the series (no preview of this episode has been published).
Play video: The Simpsons trailer
Cast and crew of this episode
- Director
- Matthew Nastuk
- Writer
- Rob LaZebnik
- Guest stars
- Marcia Wallace as Edna Krabappel (voice)
Credits: TMDB.
More from The Simpsons Season 20
Previous · S20E17The Good, the Sad and the Drugly19 April 2009
Next · S20E19Waverly Hills 9-0-2-1-D'oh3 May 2009Every episode of Season 20The Simpsons episode guide
Episode names, air dates, runtimes, stills and ratings: TMDB. Air dates are the first broadcast anywhere; where it streams is our daily Australian check.