Sadly the reports have come in today that Elisabeth Sladen, the actress who played Sarah Jane Smith, has died at the age of 63. She was without a doubt the longest running companion, working with Jon Pertwee and Tom Baker in the 1970s and 1980s, then returning several years ago to partner up with David Tennant, and finally getting her own series, the Sarah Jane Adventures. There is one more season of that in the can ready to be broadcast, so there are still new adventures waiting. The most moving tribute I have seen so far came from Russell T. Davies, although another really nice one came from Airlock Alpha. It is fitting that the BBC announcement was a part of the Doctor Who News segment of the site, and includes Steven Moffat’s reaction. And BBC Worldwide put together this YouTube collection of some of Sarah Jane’s finest moments.