Blankety Blank Guest cast, played by Dinah Sheridan Episode 4x09: Show 9 (Oct 29, 1981) Episode 4x11: Show 11 (Nov 12, 1981) Episode 8x20: Show 20 (Jan 24, 1986) Episode 9x11: Show 11 (Nov 14, 1986) Episode 10x07: Show 7 (Oct 30, 1987)