However along withthe article linked from above, I realized all but the first one, but that's not too surprising since I have only seen Armin Shimmerman in a non-ferengi role only one other time that I can remember.
Armin Shimmerman primarily does voice work these days, the most recent being a Council member in Mass Effect 1 and 2.
Originally Posted by Satcong
Wasn't the guy who played trip in a few SG-Atlantis episode too?
Yes he played Michael, quite possibly the best recurring villain in the Stargate franchise.