The Loved One is great and has a big cast (everyone from Jonathan Winters in 2 roles to Milton Berle, Rod Steiger, Paul Williams, and more). It was Terry Southern's followup movie script to Dr. Strangelove
The Loved One TRAILER (http://www.youtube.com/watch?v=62FuWtAvNpo)
And there are some interesting details in it (I think that bar the newspaper men hang out in was a real LA bar frequented by the leading edge West Coast pop artists, if not, it's a good recreation of it, it can be seen in the the recent documentary The Cool School).(Official Trailer of The Cool School: http://www.youtube.com/watch?v=kDRcXgdiZtQ
Lesson one: NO POOFTERS!
If you like this, then you should see Terry Southern’s follow up, called CANDY
http://www.imdb.com/title/tt0062776/