Phil Plait's blog is the first mention I've read that actor Darren McGavin had passed away. Phil and I must have been watching the same TV shows as kids, because I loved Kolchak: The Night Stalker, and have recently found through the miracle of TIVO that the episodes still hold up fairly well, which can hardly be said of most of the television produced in the 1970s.
The thing that I found most remarkable about the show is just how unheroic Kolchak really was. He wasn't Clark Kent, secretly fighting crime with superpowers at night. He was just an average, middle age reporter, whose only talent seemed the ability to irritate everyone he came into contact with. It was a great character, and a great set of performances by McGavin. Lots of fun, and well worth watching on DVD.