It is hard to believe it has been that long. It looks as if the official web page is planning something to celebrate. This was quality sci-fi comedy (far superior to Hyperdrive).
I have been a fan of the show since I first saw it and have collected all episodes on DVD. It is a shame that the much touted film is yet to materialise. One suspects that if Hitchhiker's had done a bit better at the box office the likelihood of a cinematic version of Red Dwarf would have have been much stronger.
If you want to enjoy some of the best bits, YouTube has many BBC-sanctioned clips, including, "They're dead, Dave"
I should say that although my favourite parts come predominantly from the earlier series I have never been one of the purists who railed against the big differences that occurred in series 7 and particularly 8.
In fact I watched series 8 again very recently (i.e. last EISCAT campaign) and enjoyed it very much.
And that only had a little to do with the presence of Kochanski...