The Pink Panther spends the day in his attic rummaging through an old trunk. Inside, he finds several letters from his former Army friend, Loudmouth Louie, which causes the panther to reminisce about his past. The past is represented via several past Panther entries, including "G.I. Pink," "Pink in the Clink," "Pink Pajamas," "Pickled Pink," ending with "The Pink Package Plot." DePatie-Freleng Enterprises (DFE) produced this "best of" episode in an effort to cut costs. By 1971, they were busy producing new entries for the highly successful "The New Pink Panther Show" on NBC-TV and had to come up with cartoon quickly. Thankfully, they chose some worthy past entries. Marvin Miller (who was busy providing off-camera narration on "The New Pink Panther Show") provides the voice of Loudmouth Louie, uncredited. Though some scoff at "Pink-In" being a cheap knock off, it is a memorable episode nonetheless, and provides a rare spoken voice in an otherwise pantomime-only series. The current print available contains the version with a laugh track, which was added at the insistence on NBC-TV. No question that the canned chuckles make some cringe; however, others view them as a welcome addition. Viewers today seem to think the hated laugh track has been long dead and buried, when in fact, it is alive and well on nearly every single "live" sitcom (laugh tracks have always been used in the background as a safety in the U.S., and will not be going away any time soon). Its usage in "Pink-In" harks back to the day when Charley Douglass and his "laff box" was synonymous with television comedy. In other words, get over it. Laughing matters.