None in IV, V, VI or VIII.

VII - Lifestream part. That just grinds my nerves waiting for it. Same with the desert prison and forced chocobo race.
IX - The part where you go to Treno and have to play the card game tournament and face Cid.
X - Cloyster of Trials in Bevelle. I hate when you take a wrong turn and have to go right back around again.
X-2 - its been a while so I can't remember anything. I'll be playing it over again once ive finished with X so i'll repost when i find somthing.