His website has announced his passing. Best known as the implacable Gerard on THE FUGITIVE, he was also the professor on SPACE: 1999, played Phobos in the "Controlled Experiment" episode of THE OUTER LIMITS, and appeared in films including KINGS OF THE SUN, JUSTINE, ASYLUM, THE CHANGELING, and FUNERAL HOME.

Janssen has had almost 28 years to get comfortable in the afterlife. Now, here comes Morse to chase him around again.

Here in the UK, at least, he'll also be fondly remembered for his role as a deranged and befuddled President-of-the-US-of-A, Johnny Cyclops, in the original TV version of Marshall and Renwick's superb black comedy WHOOPS APOCALYPSE.

Plans to release the TV series (and the movie) on DVD seem to have faltered last year.

Sad to see him go. SPACE:1999 was a huge part of my childhood, and seeing him in THE FUGITIVE later was such a thrill.

Yeah, I was a big SPACE:1999 nerd, too (I still have the technical manual) and loved Morse on the show ("People are dying here, John."). There's a nice obit for Morse here.