Cripslock is older than I expected, but it's been a while since I read The Truth, and Adora Belle seems younger -- maybe I've been blurring them in my mind. Anyway, I doubt The Truth is high priority for being filmed, so it's not the end of the world either way.
On another note, I tried to watch The Color of Magic a while back but gave up about 15 minutes in because Rincewind wigged me the hell out. Should I try again, guys? I loved Hogfather.