The bad news is space and money limitations meant that I recorded them off-air onto VHS at SLP, the 6-hour, lower quality mode. I recorded them (ususally) without editing the commercial breaks, so there's bound to be some goodies in there, too. The shows include many of Harlan Ellison's commentaries, the John Carpenter commentary regarding "They Live", lots of Bob's Basement, etc. The SF Vortex episodes include J. Michael Straczynski's appearance.
I also have several hours of FTL Newsfeed, the one-minute newscasts from 150 years in the future SFC used to run during commercial breaks.
I do not have a capture card yet, but one is in my not-too-distant future and I have lots of VHS that's getting the preservation treatment. I'm still on the fence between an MPEG card (to generate DVD-ready MPEG) or an analog-to-DV card, which would allow for many more editing options, but would mean re-encoding to DVD-ready MPEG. I tend to want the option to edit more freely, but would welcome opinions on the matter.