TV Alvin and the Chipmunks - Season 5 Episode 3 : Sincerely Theodore Alvin and the Chipmunks - Season 5 Episode 3 : Sincerely Theodore 6.9/10 by 79 users Theodore goes on a diet so he could go on a date with a pen pal, who is also one of Alvin's biggest fans. Things go wrong when Alvin finds out that Theodore's date is actually the daughter of a famous film director. Alvin then takes her out instead, breaking Theodore's heart. In order for Alvin to make it to his play and the date, Alvin gets Theodore to switch back and forth to his play and on his date. Details Casts Posters Images Title Alvin and the Chipmunks - Season 5 Episode 3 : Sincerely Theodore Alternative Titles Alvin et les Chipmunks, Novos Esquilos, Alvim e os Esquilos, Alvin in veverički, The Chipmunks, The Chipmunks Go to the Movies First Air Date 1983-09-17 Last Air Date 1990-12-01 Number of Episodes 172 Number of Seasons 8 Genres Animation, Comedy, Family, Networks NBC, Casts Ross Bagdasarian, Jr., Janice Karman, Dody Goodman, Nancy Cartwright, Frank Welker, Tress MacNeille, Ross Bagdasarian Plot Keywords , Alvin / Simon / Dave Seville (voice) Ross Bagdasarian, Jr. Theodore / Brittany / Jeanette / Eleanor (voice) Janice Karman Dody Goodman Nancy Cartwright Frank Welker Tress MacNeille Ross Bagdasarian Episodes List Alvin and the Chipmunks Season 5 :Episode 1 Back To Dave's Future Back To Dave's Future 1987-09-12 Three chipmunk brothers, Alvin, Simon, and Theodore are adopted by human, Dave. Alvin and the Chipmunks Season 5 :Episode 2 Tell It To the Judge Tell It To the Judge 1987-09-12 Three chipmunk brothers, Alvin, Simon, and Theodore are adopted by human, Dave. Alvin and the Chipmunks Season 5 :Episode 3 Sincerely Theodore Sincerely Theodore 1987-09-19 Three chipmunk brothers, Alvin, Simon, and Theodore are adopted by human, Dave. Alvin and the Chipmunks Season 5 :Episode 4 My Pharaoh Lady My Pharaoh Lady 1987-09-19 Three chipmunk brothers, Alvin, Simon, and Theodore are adopted by human, Dave. Alvin and the Chipmunks Season 5 :Episode 5 Simon Says Simon Says 1987-09-26 Three chipmunk brothers, Alvin, Simon, and Theodore are adopted by human, Dave. Alvin and the Chipmunks Season 5 :Episode 6 When the Chips Are Down When the Chips Are Down 1987-09-26 Three chipmunk brothers, Alvin, Simon, and Theodore are adopted by human, Dave. Alvin and the Chipmunks Season 5 :Episode 7 Alvin, Alvin, Alvin! Alvin, Alvin, Alvin! 1987-10-03 Three chipmunk brothers, Alvin, Simon, and Theodore are adopted by human, Dave. Alvin and the Chipmunks Season 5 :Episode 8 Dave's Dream Cabin Dave's Dream Cabin 1987-10-03 Three chipmunk brothers, Alvin, Simon, and Theodore are adopted by human, Dave. Alvin and the Chipmunks Season 5 :Episode 9 Old Friends Old Friends 1987-10-10 Three chipmunk brothers, Alvin, Simon, and Theodore are adopted by human, Dave. Alvin and the Chipmunks Season 5 :Episode 10 The Mystery of Seville Manor The Mystery of Seville Manor 1987-10-10 Three chipmunk brothers, Alvin, Simon, and Theodore are adopted by human, Dave. Alvin and the Chipmunks Season 5 :Episode 11 Ask Alvin Ask Alvin 1987-10-17 Three chipmunk brothers, Alvin, Simon, and Theodore are adopted by human, Dave. Alvin and the Chipmunks Season 5 :Episode 12 Theodore Lucks Out Theodore Lucks Out 1987-10-17 Three chipmunk brothers, Alvin, Simon, and Theodore are adopted by human, Dave. Alvin and the Chipmunks Season 5 :Episode 13 Big Dreams Big Dreams 1987-10-24 Three chipmunk brothers, Alvin, Simon, and Theodore are adopted by human, Dave. Alvin and the Chipmunks Season 5 :Episode 14 Island Fever Island Fever 1987-10-24 Three chipmunk brothers, Alvin, Simon, and Theodore are adopted by human, Dave. Alvin and the Chipmunks Season 5 :Episode 15 Just One of the Girls Just One of the Girls 1987-10-31 Three chipmunk brothers, Alvin, Simon, and Theodore are adopted by human, Dave. Alvin and the Chipmunks Season 5 :Episode 16 Goin' Down To Dixie Goin' Down To Dixie 1987-10-31 Three chipmunk brothers, Alvin, Simon, and Theodore are adopted by human, Dave.