So, I watched the first four seasons of Babylon 5 over the last few weeks. (I guess this is what one does when a dissertation is complete - nothing). Then, by random chance, my next choice was Jeremiah, which also happened to be a JMS show.
Coincidences abound, though, because there's actor after actor who show up in Jeremiah, who later starred in Battlestar Galactica.
First, I noticed that Tricia Helfer (Number Six) has a brief appearance in the first episode (looking VERY young...)
Then, Kandyse McClure (Dee) plays Kurdy's love interest.
Now, I'm looking and I see that Alessandro Juliani (Gaeta) plays a charismatic preacher in one episode.
So, sure enough, I start looking at the other actors from BSG, and I find:
Aaron Douglas (Tyrol) was also on both shows.
Is it a Canadian thing?