Damn, the curse of B5 continues. The number of cast and crew from that show who died at an unacceptable age is staggering.
The following article includes links to a two-part Youtube video of a fascinating convention panel featuring many of the key figures from the show, including Doyle. It's long (about 90 minutes), but essential viewing for fans of the show, as it reveals many secrets and moving anecdotes from the production. Just skip past the first ten minutes or so of the first video, as the moderators are useless, and it doesn't start to pick up until JMS hijacks control of the panel from them.
http://www.blastr.com/2013-5-28/straczy ... -babylon-5