Originally posted by: Death BOO Z
as far as i know, filler are parts in the anime which didn't appear in the manga...
for example:
about everything after shishio's arc in Rurouni kenshin (i think 63\64 was in the manga, and after that it was all filler), as well as the 'pirates" and the "train" arcs.
In Ranma 1\2: about half the times akane gets kidnapped or Ranma gets challenge by a complete stranger, and the entire Sasuke charecter...
in Inuyasha: about half the times a random demon challenges Inuyasha or kidnappes Kagome, and the entire Ayame charecter, also, the way he defeated Bankoutso (episode 120 or something) was diffrent from the manga...
anyway, the best filler episode I know is DBZ 110 (125 in jap version), it was one of the fast-paced eps, and it was really funny, with Chichi getting pissed on Piccolo for leaching on them... good stuff! beside the fact goku went SSJ to save some nerdy school kids, which was stupid..