I was looking at some stuff on Wikipedia and noticed that Stephen Furst had died in June (He played Vir).
I took a look at the other main stars and was saddened by how many are now gone.
Michael O'Hare - Jeffrey Sinclair
Jerry Doyle - Michael Garibaldi
Richard Biggs - Dr Stephen Franklin
Andreas Katsulas - G'Kar
Stephen Furst - Vir Cotto
Jeff Conaway - Zack Allan