This is the first thing I thought of when I saw the headline. Here they are, from the "starring" field of the B5 Wiki page: 60 Michael O'Hare 60 Jerry D

This is the first thing I thought of when I saw the headline. Here they are, from the "starring" field of the B5 Wiki page: 60 Michael O'Hare 60 Jerry Doyle 65 Mira Furlan 44 Richard Biggs 63 Stephen Furst 59 Andreas Katsulas 60 Jeff Conaway Also, not starring but great in a bit role: 49 Tim Choate