The brit Out: There's a new (old) sheriff in town :O

[Zaladane]

Tuvok was in Generations, and the actor who played David (Kirk's son) was in Symbiosis (TNG episode).
And of course, Vaughn Armstrong has been pretty much everything from a Klingon, to a Borg, to a Starfleet Admiral.

I believe Tuvok was also in Undiscovered country as well (I realize there was that Voyager episode when he was young on the Excelsior, and don't think that's what I'm remembering) Never knew about David though I'll have to check that one out. Gonna have to look up Armstrong too, doesn't ring a bell. I think Armin/Quark played one of the first Ferengi ever in TNG too.

And then there's Red from that 70's show, he's been in a lot too.

Wait a sec, wasn't there two actors for Kirks son? for 2 and 3.