@eurocelticyankee,
1. I have seen many Science fiction action drama tv series over the years.
2. I've seen really old series, newer series, and many in between.
3. Her are just some of those series, I have actually seen.
4. And this list is
totally Random and in no particular order:
Logan's Run (TV Series 1977–1978)
Man from Atlantis (TV Series 1977–1978)
Dark Angel (TV Series (2000–2002)
Stargate SG-1 (TV Series 1997–2007)
Farscape (TV Series 1999–2003)
Space: Above and Beyond (TV Series 1995–1996)
Battlestar Galactica (TV Series 1978–1979)
The Six Million Dollar Man (TV Series 1974–1978)
Warehouse 13 (TV Series 2009–2014)
Andromeda (TV Series 2000–2005)
Star Trek: Deep Space Nine (TV Series 1993–1999)
Terra Nova (TV Series 2011)
Revolution (TV Series 2012–2014)
Space: 1999 (TV Series 1975–1977)
Z Nation (TV Series 2014–2018)
SeaQuest (TV Series 1993–1996)
Continuum (TV Series 2012–2015)
War of the Worlds (TV Series 1988–1990)
Eureka (TV Series 2006–2012)
Defiance (TV Series 2013–2015)
Travelers (TV Series 2016–2018)
Star Trek: Voyager (TV Series 1995–2001)
Stargate: Atlantis (TV Series 2004–2009)
First Wave (TV Series 1998–2001)
The Bionic Woman (TV Series 1976–1978)
Doctor Who (TV series 2005–present)
Manifest (TV series 2018-present)
Galactica 1980 (TV Series 1980)
Buck Rogers in the 25th Century (TV Series 1979–1981)
Star Trek: The Original Series (TV Series 1966–1969)
V (TV Series 1984–1985)
The 100 (TV Series 2014–2020)
Even with all of the many Science fiction action drama series I've seen over the years,
I still believe that
(The 100) is the best Science fiction action drama series
ever.