Season
- Season 1 1956-06-13
- Season 2 1964-07-04
- Season 3 1965-07-03
- Season 4 1966-07-02
- Season 5 1967-04-29
- Season 6 1968-03-16
- Season 7 1968-08-21
- Season 8 1968-12-25
- Season 9 1969-09-08
- Season 10 1970-06-15
- Season 11 1971-03-15
- Season 12 1971-11-08
- Season 13 1972-08-07
- Season 14 1973-08-06
- Season 15 1974-08-05
- Season 16 1975-09-29
- Season 17 1976-10-04
- Season 18 1977-09-19
- Season 19 1987-03-21
- Season 20 1988-03-05
- Season 21 1989-03-04
- Season 22 1990-03-31
Opportunity Knocks - Season 20 Episode 9
0.00 30 minutes Bob introduces six more talented acts, new to network television, plus the winner from last week's show. You can see the stars of tomorrow tonight, on the only TV talent show which is open to all!
