I was going to direct you to Grindhouse, a great example of filmmakers working to give their audience maximum bang for the buck. When it played in theaters, Grindhouse included two full-length feature films (Planet Terror and Death Proof), plus a few fake "preview of coming attraction" trailers.
I guess people thought Grindhouse was too good of a deal, because they mostly didn't go see it.
As a result, the powers that be (Dimension Films), didn't release a Grindhouse DVD. They released the two features separately. And you have to look around on the internet to find the trailers.
Like this one (particularly appropriate for today):
That link is not even safe for work, by the way.
If Dimension ever releases a real Grindhouse DVD, check it out.
And have a Happy Thanksgiving!