Often I think about, "Whatever happened to..." such and such a minor celebrity that touched our useless lives back in the day.
The first one that I was thinking of was John-John from Sesame Street.
John Williams III (born in New York City, circa 1970), better known to audiences as John-John, was one of the many small children who appeared on the early seasons of Sesame Street. He joined the show at the age of two, after his mother answered an open call for Sesame Street kids. "The thing that clicked, my mother told me, was that I was able to relate to the Muppets. I wasn't afraid of them," Williams said in a 1998 interview. "And I remembered every single character's name."
Though he appeared on the street segments with Mr. Hooper, Susan, and the rest, John-John's shining hour was his honest, often unpredictable, interactions with Grover, Herry Monster, and others. John-John contributed to many of the best remembered Sesame Street Muppet & Kid Moments.
As a young man, Williams joined the Air Force, and was stationed at Laughlin AFB in Texas. He made a special appearance in the 1989 TV special Sesame Street: 20 and Still Counting, where he reunited with Herry Monster. (link on the jump, if you really need to see it)
As of 1998, Williams and his wife resided in San Antonio with their two children, and was working on establishing himself as a Tejano singer.