9 Season
322 Episode
Rugrats - Season 8 Episode 18 The Great Unknown (2004)
The Rugrats set their sights on a staircase post, where it hides one of the Rugrats' greatest mysteries -- why does it wobble?
- Country : United States of America
- Genre : Family, Animation, Kids, Comedy
- Studio : Nickelodeon
- Director : Gábor Csupó, Paul Germain, Arlene Klasky
- Cast : Elizabeth Daily, Kath Soucie, Cheryl Chase, Dionne Quan, Tara Strong, Joe Alaskey