I just re-watched Sid Vicious and Nancy Spungen's appearance on New York public access tv from 1978. It was filmed a few weeks before Nancy was murdered and about 5 months before Sid took a heroin overdose and died.
It basically involves people calling in and asking some really dumb and funny questions. Sid is just taking the piss and insulting the callers whereas Nancy comes off as sometimes a bitch but also sometimes quite funny.
Alongside Sid & Nancy is Stiv Bators from Dead Boys and The Lords of the New Church with his girlfriend. To be honest they hardly get a word in and this is definitely all about Sid & Nancy. It's an interesting snapshot of a moment in time and definitely worth a look if you're interested in punk and/or Sid & Nancy.
As an aside I saw an interview with John Lennon that must have been made not long before his death where he mentions having seen Sid & Nancy's appearance on this public access show (John was of course living in NY at the same time Sid & Nancy were) and he gives his thoughts on The Pistols and a few other bands like Madness, Blondie and The B-52's. It's only a couple of minutes long but again it's well worth a look if John Lennon and his opinions about the new music of the time interest you.
Here are links to both interviews (5/5 for both btw):
Sid & Nancy
John Lennon