According to this article, PBS is planning a series of shows under the umbrella title "Pioneers of Television." The series will feature four hours, each specializing on a specific topic: sitcoms, late night, variety and game shows. The shows are due to air NEXT winter or early spring - in short, about a year from now.
Among the interviewees: Dick Van Dyke, Mary Tyler Moore, Art Linkletter, Andy Griffith, Betty White, Phyllis Diller, Jim Nabors, Marlo Thomas, Jonathan Winters, Andy Williams, Ed McMahon, Merv Griffin, Bob Barker and Tom Smothers.
The people involved did a show, "Pioneers of Primetime," for PBS in 2005. I don't remember it - if anyone does, was it good?