In the last few months there have been some DVD releases that have included as bonuses, some rare game show episodes that have never been available for, so this is something worth keeping in mind if you want to find some interesting items.
1-Dick Van Dyke Show, Season 2, released in 2003, has the cast appearance on "Stump The Stars" in full.
2-Twilight Zone, Season 1, released in 2004, has an entire 1969 episode of Rod Serling hosting "Liars Club" but missing the final sequence.
More recently though, we can add these to the list.
1-"The Johnny Carson Show" released this year by Shout Entertainment is devoted to ten episodes of Carson's 1955-56 CBS variety show. But included as a bonus is one episode of "Who Do You Trust" from September 9, 1958 which Carson himself personally saved from destruction because of a hilarious moment that resulted when a contestant got accidentally locked in his isolation booth and they couldn't get him out for over five minutes, and all of this was happening on live TV. This brings the total number of complete episodes of this Carson game show that are now out there for collectors, to three (Ed McMahon was still a month away from becoming Carson's announcer at this point).
2-"Dick Van Dyke--In Rare Form" is a recent release by MPI devoted to clips of Dick on "The Pat Boone Chevy Show" from 1958-59. But included as a bonus complete with ads is an episode of the short-lived panel show "Laugh Line" that Dick hosted. The show is not the first episode as the panel doesn't match that one from the EOTVGS, consisting of Dorothy Loudon, Louis Nye, Mike Nichols and Elaine May.