Ron Glass has passed away at the age of 71. May he rest in peace. He was best known as Shepherd Book from Firefly, and Detective Ron Harris from Barney Miller. I already thought he was great in Firefly. Thanks to various marathons on Antenna TV and FamilyNet over the last year and a half or so, I grew to love him on Barney Miller as well.
The cast of Firefly paid tribute to him here.
(I still have this one Book icon left, so it's only fitting that I use it here. Also, that makes it two from Barney Miller that have died this year, unless I missed someone. Ron Glass and Abe Vigoda.)