Blankety Blank Guest cast, played by Keith Harris Episode 1x14: Show 14 (Apr 26, 1979) Episode 2x15: Show 15 (Dec 13, 1979) Episode 6x11: Show 11 (Nov 12, 1983) Episode 7x10: Show 10 (Nov 23, 1984) Episode 7x13: Show 13 (Dec 14, 1984) Episode 8x20: Show 20 (Jan 24, 1986)