| letter | years | show | % Correct |
|---|---|---|---|
| S | 1989 - present | The Simpsons | 82%
|
| X | 1993 - 2002 | The X-Files | 59%
|
| F | 1999 - present | Family Guy | 49%
|
| B | 1959 - 1973 | Bonanza | 41%
|
| D | 1978 - 1991 | Dallas | 41%
|
| E | 1994 - 2009 | ER | 36%
|
| L | 1990 - 2010 | Law & Order | 33%
|
| N | 2003 - present | NCIS | 33%
|
| C | 2000 - 2015 | CSI: Crime Scene Investigation | 30%
|
| G | 1955 - 1975 | Gunsmoke | 29%
|
| Q | 1976 - 1983 | Quincy, M.E. | 26%
|
| R | 1988 - 1997 | Roseanne | 25%
|
| O | 2005 - 2013 | The Office | 21%
|
| H | 1968 - 1980 | Hawaii Five-O | 19%
|
| W | 1972 - 1981 | The Waltons | 18%
|
| K | 1979 - 1993 | Knot's Landing | 16%
|
| Z | 1957 - 1959 | Zorro | 15%
|
| M | 1960 - 1972 | My Three Sons | 14%
|
| A | 1952 - 1966 | The Adventures of Ozzie and Harriet | 12%
|
| P | 1957 - 1966 | Perry Mason | 10%
|
| T | 2003 - 2015 | Two and a Half Men | 10%
|
| I | 1967 - 1975 | Ironside | 7%
|
| V | 1962 - 1971 | The Virginian | 7%
|
| Y | 2000 - 2006 | Yes, Dear | 4%
|
| J | 1950 - 1965 | The Jack Benny Program | 1%
|
| U | 1953 - 1963 | The United States Steel Hour | 1%
|