Theodore steals Alvin's winning personality in 'Mr. Fix-It', then in 'Little Drummer Boy', Alvin repays the favour with a baking-based prank. Can't we all just get along? (S5, ep 18)
Brittany takes up painting to impress her fashion idol. But her idol only likes her art after Alvin accidentally ruins it. // Alvin, convinced that Julie and her son are trying to move into their home, tries to stop it.
Alvin begs Dave to spend a weekend alone with him in 'Alvin's Wild Weekend', then in 'For Whom the Bell Tolls', a hypnotist accidentally turns Simon into a bumbling fool! (S2, ep 8)
The chipmunks try to keep Dave from getting on the internet after a performance he posts gets negative comments. // The Chipmunks along with Kevin and Cheesy decide to crash BoCarter's birthday yacht party after not being invited.
Eleanor enters a knight competition in 'A Knight's Tail', and then in 'The Lifeguard', Alvin and Eleanor train to be lifeguards. Theodore flunks, but saves the day. Oops, spoiler alert. (S5, ep 22)
The girls are remembering their home in 'The Tree House', then in 'Saving Simon', Alvin and Theodore think that Simon is going away to a boarding school, and try to keep him at home. (S1, ep 15)
Simon creates a Super Hero costume for a convention he's attending in 'Munk Man', and in 'Ride Along', when Alvin's bicycle is stolen, he joins forces with Officer Dangus to solve the case. (S2, ep 7)
Simon goes missing and no one else notices in 'Oh Brother Where Art Thou', then in 'The Wall', the girls at school cast votes for the cutest chipmunk on the bathroom wall. (S3, ep 6)
Alvin packs a whole summer into one just day in 'Last Days of Summer', and in 'The Littlest Robot', Simon invents a robot with emotions and an ability to learn which quickly backfires. (S4, ep 21)
Eleanor decides to move in with Alvin and his brothers in 'Sister Act', then in 'Lil' T', Theodore posts a video of himself rapping on the Internet and it becomes a mega-hit! (S1, ep 3)
Alvin has to keep quiet for 24 hours in 'Spoiler-Itis', then in 'Something's Fishy', Alvin and Simon think Theodore's pet goldfish has died, so go all out to replace it before he notices. (S3, ep 4)
Dave is thrilled when he thinks he's nominated for a Grammy, but it's actually an award for aging musicians. // Alvin and Kevin pretend to be sick to miss school and sneak off to the Dagarack Convention.
Alvin almost drives a local toy store out of business in 'Unboxing Day', then in 'Dave's Pavillion', Dave's new pavilion is surprisingly ruined for some reason. But who is to blame? (S5, ep 2)
Alvin pretends to write a broadway show in 'Writer's Blocked', and in 'Jinxed!', after Theodore sees Alvin accidentally ruin Dave's computer, Alvin jinxes Theodore so he can't tell on him. (S5, ep 11)
Dave sets down a very strict study schedule in 'Special Ingredient', then in 'Love Song', there is some singing, and that kind of thing, as might reasonbaly be expected. (S5, ep 19)