Genre shows ranked by number of seasons:
- Dr. Who (26 seasons: 1963-1989) 700 episodes
- Stargate: SG1 (10 seasons: 1997 – 2007) 184 episodes (to date) [214 at end of 10th season]
- Touched By an Angel (9 seasons: 1994 – 2003) 212 episodes
- X-Files (9 seasons: 1993-2002) 202 episodes
- Bewitched (8 seasons: 1964-1972) 254 episodes
- Charmed (8 seasons: 1998-present) 161 (to date) [178 at end of 8th season]
- Star Trek: TNG (7 seasons: 1987-1994) 178 episodes
- Star Trek: DS9 (7 seasons: 1993-1999) 176 episodes
- Star Trek: Voyager (7 seasons: 1995-2001) 172 episodes
- Sabrina, the Teenage Witch (7 seasons: 1996-2003) 163 episodes
Genre shows ranked by number of episodes:
- Dr. Who (26 seasons: 1963-1989) 700 episodes
- Bewitched (8 seasons: 1964-1972) 254 episodes
- Stargate: SG1 (10 seasons: 1997 – 2007) 184 (to date) [214 at end of 10th season]
- Touched By an Angel (9 seasons: 1994 – 2003) 212 episodes
- X-Files (9 seasons: 1993-2002) 202 episodes
- Charmed (8 seasons: 1998-present) 161 (to date) [178 at end of 8th season]
- Star Trek: TNG (7 seasons: 1987-1994) 178 episodes
- Star Trek: DS9 (7 seasons: 1993-1999) 176 episodes
- Star Trek: Voyager (7 seasons: 1995-2001) 172 episodes
- Sabrina, the Teenage Witch (7 seasons: 1996-2003) 163 episodes