Ben Browder

IMDB Page

'Sam Brody' in Party of Five

'John Crichton' in Farscape

'Lt Colonel Cameron Mitchell' in Stargate SG-1

'Isaac' in Doctor Who 
'Ted Gaynor' in Arrow
'The Male Player' (voice) in Call of Duty: Black Ops 3
'Sovereign Admiral' in Guardians of the Galaxy 2