Alone at PCA - S4-E3
Continuity mistake: Stacy is sitting on the curb waiting for her parents to show up. When the guy with the blower came by and swept the leaves on her, it showed no sign of her when he walked by. Just her luggage.
Continuity mistake: When Zoey is about to get down off the horse, she is at first straddling the horse, then instantly has both legs hanging down on one side.
Walk-A-Thon - S4-E7
Continuity mistake: When Michael and James are discussing the word bicycle, the length of the straw sticking out from Michael's drink changes drastically between close ups and long shots.
Walk-A-Thon - S4-E7
Continuity mistake: When Michael discovers Logan and Quinn together, the book on Quinn's lap closes itself instantly between shots.
Walk-A-Thon - S4-E7
Continuity mistake: In the opening scene, when Lola is knitting, the wool constantly changes back and forth from being on the needle to off, and from being tangled to tidy.
Walk-A-Thon - S4-E7
Continuity mistake: When Quinn and Logan are asking Michael if he knows about their relationship, Quinn's hair jumps from behind to in front of her shoulder in an instant.
Chosen answer: Zoey 101 and iCarly were both scored and composed by Michael Corcoran, so he may have written a short melody for the Zoey ringtone, and later re-used it for the song which was used as the iCarly theme.
Sierra1 ★