Hi Cammie,
That would certainly be interesting. I think maybe I should check back through my records and assemble a top 40 so that everyone can see what has sold the most over the years. I agree that these will not necessarily coincide with personal favourites, but I bet they often will. Some movies have sold in extraordinary numbers over the years, whereas some I thought would be very popular fell completely flat. I guess no one can predict what audiences will like to that extent, otherwise there would be no duff films at the cinema and the big studios would be very rich indeed.
The predictable big sellers are the multi-model movies, especially "Line At The Ladies" and "The Wettest Link". Some of Jayne's did remarkably well over time. But i don't want to steer this thread; I'd much sooner read what others have really liked. Later, I will assemble a top 40 and we'll see how much coincidence there is in tastes.