Intro - Once the official SpongeBob intro was created the official logo had the SpongeBob sketch on it
Intro - SpongeBob is in many countries and in the French intro the spelling for "SpongeBob Squarepants" cannot fit on the screen so instead in many scenes where SpongeBob's name should be in the intro it is changed; when there is bubble letters a SpongeBob sketch appears.
"Home Sweet Pineapple" - This is the first appearance in the show and it is when SpongeBob and Patrick build the new house during the montage and during that SpongeBob is seen painting and as he paints a SpongeBob sketch appears.
"Hall Monitor" - This next apperance of a SpongeBob sketch is when Patrick is confronted by two policemen and show him the wanted sign of "The Maniac." (AKA SpongeBob) The wanted sign is a SpongeBob sketch.