Overview: ""Class of '68"" - a salute to this year's ""graduating class."" Guests: --John Davidson (host) - ""Crossroads of Life"" & ""By the Time I Get to Phoenix"" --Tom Jones - ""It's Not Unusual"" --Fifth Dimension - ""Up-Up, and Away"" --Michele Lee - ""Jamboree Jones"" --Flip Wilson (comedian playing a guru) --Buffy Sainte Marie - ""Take My Hand"" --Irwin Corey (comedian)