| 100% | NATURE | 6 | Long-running PBS documentary series about animals and ecosystems |
| 47% | POV | 3 | Long-running PBS documentary film series |
| 39% | YEARSOFLIVING | 13 | "___ Dangerously," a documentary series about global warming which Arnold Schwarzenegger produced and appeared and also hosted |
| 37% | POV | 3 | PBS documentary series |
| 37% | DOWNTONABBEY | 12 | PBS "Masterpiece" series about the Earl of Grantham and his family: 2 wds. |
| 36% | DIFFRENTSTROKES | 15 | '70s-'80s series about the Drummond family ... and what the starts of four long answers are |
| 36% | NOVA | 4 | Long-running PBS science series |
| 36% | POV | 3 | Long-running PBS film series |
| 36% | POV | 3 | PBS documentary series since 1988 |
| 36% | NOVA | 4 | PBS documentary series since 1974 |
| 36% | STARTREK | 8 | Long-running science fiction TV series and movies |
| 34% | TRUELIFE | 8 | MTV documentary series about everyday people |
| 34% | STARFOX | 7 | Nintendo series about animals in space |
| 34% | POV | 3 | PBS documentary film series |
| 34% | POV | 3 | PBS documentary series whose title alludes to cinematic perspective |
| 34% | BAYWATCH | 8 | Long-running drama series about LA lifeguards |
| 34% | TIGERKING | 9 | *Netflix documentary series about a controversial zookeeper |
| 33% | NANCYDREW | 9 | Long-running book series about a girl detective |
| 33% | GUNSMOKE | 8 | Long-running US Western television series that starred James Arness and Milburn Stone |
| 33% | ALLTHAT | 7 | Long-running Nickelodeon sketch-comedy series that featured Amanda Bynes and Kenan Thompson |
| 32% | BARNEY | 6 | Purple dinosaur on an upcoming Cartoon Network reboot of a long-running PBS series |
| 32% | MINDER | 6 | Long-running ITV comedy-drama series starring George Cole, Glynn Edwards and Dennis Waterman |
| 32% | NAM | 3 | Subject of a 2017 Ken Burns PBS documentary series, briefly |
| 32% | KINGOFTHEHILL | 13 | Long-running animated series about a family in Texas: 4 wds. |
| 31% | CSI | 3 | "___: Miami," long running forensic series on TV |
| 31% | SCREAM | 6 | Horror film series about a long-mouthed mask |
| 31% | SIXFEET | 7 | __ Under, HBO series about a morgue and family |
| 31% | SOUTHPARK | 9 | An animated series about Cartman, Stan and Kyle |
| 31% | THEXFILES | 9 | Sci-fi series about agents Mulder and Scully |
| 30% | OUT | 3 | ___ and about (no longer ill) |