Oh Brother Where Art Thou is an episode of the ALVINNN!!! and The Chipmunks series.
When Simon goes missing and nobody seems to remember who he is, Alvin worries that he is losing his mind.
- Alvin Seville
- Simon Seville
- Theodore Seville
- Brittany Miller
- Jeanette Miller
- Eleanor Miller
- Dave Seville
- Miss Croner
- Goof: In one scene, Simon is missing his tail for a few frames.
- The same goof happens to Alvin during the scene where he is pretending to be asleep.
- Alvin makes references to both Star Wars and Star Trek II: The Wrath of Khan when playing with a red lightsaber toy and refering to himself as Khan.
- A miniature-sized version of Harmony appears in this episode.
- Talking Teddy makes another re-appearance in this episode.
- When this episode premiered in the US, it aired with a re-run of Ballet Boys.