--Ed McMahon (host for 8 weeks) --Frankie Valli & the Four Seasons - ""Let's Hang On"" ""Saturday's Father"" --Frankie Valli - ""By the Time I Get to Phoenix"" --Richard Pryor (comedian) - monologue (re: being the skinniest kid in the gang & being the only working knight in the country) --Roger Williams (pianist) - ""The Impossible Dream,"" ""Dark Eyes"" & ""The Spinning Son"" --Lana Cantrell (singer from Australia) - ""I'm All smiles,"" ""The Fool on the Hill"" & ""Baby, Now That I've Found You"" --Billy Barnes (singer in the new talent spotlight) - ""Lover, Come Back to Me""