Agent Smith is an episode of the ALVINNN!!! and The Chipmunks series.
After Alvin interrupts Simon daydreaming of being a world-famous reporter, Simon expresses his nervousness about an interview for the school newspaper. Alvin's puzzled as to why he wants to be in the newspaper so Simon provides an example situation, the principal extending the school day and doubling homework, that causes Alvin to freak out forcing Theodore to snap him out of it. During the interview, Simon learns his proposal is boring, and while he attempts to come up with another idea, his brothers save him by claiming they have top secret information they need to discuss. Outside, Alvin offers the blue-clad chipmunk some of his "grade-A stories;" his final idea involves proving Miss Smith is a commando in the Special Forces. Alvin and Theodore retell strange observations over the last couple days convincing Simon to investigate only to find nothing abnormal about her behavior. His brothers visit Miss Smith and persuade her to pretend to be a secret agent in order to get Simon a story in return for Alvin behaving, doing his homework, and making no jokes for a month. A couple agents try to scare Simon away, but he's motivated to get the story. The boys are caught witnessing Miss Smith doing karate at the airport, and following Simon's presentation of his story, Miss Smith tells them they can't print any of it, securing Simon an Editor position.
- "She's Gettin' Closer" 
- When this episode premiered in the US, it aired with a rerun of Simon the Superb.