'Trek' is probably more cerebral and philosophical. 'Stargate' does seat-of-the-pants adventure and humor better.
After 'Star Trek,' I was the commander on 'Stargate Atlantis,' the final season, and once my character had become a good commander, I was sorry that the show didn't last beyond that.
Let's face it: Amanda Tapping's shoes are difficult to fill. She's a great actress and a popular character on 'Stargate'; she's just a lovely person.
If you're looking at my other major science fiction roles - the Doctor on 'Star Trek' and certainly Woolsey on 'Stargate' - I often play characters that might be good theorists and good thinkers, but you wouldn't call either of them very macho characters.
I didn't realize it at first, but the Doctor is in the same spirit as those natural 'outsider' characters 'Star Trek' series have, like Spock and Data.
It was hard to make a living as an actor in New York if you did not do soap operas or commercials.