For those, like me, with a taste for the schlocky B-movie, I have found a site that may be of interest. Trailers From Hell. Click on My Blog site list to the side to find it.
It has trailers of many a cult film, commentaries from a (small) range of directors.
You have John Landis commenting on The Bride And The Beast, written by one Ed Wood Jr, or Joe Dante on The Beast Of Yucca Flats, starring Tor Johnson. Then there's Creature From The Haunted Sea, a Black Lagoon rip-off with legendary writer Robert Towne in a supporting role. Or the Ed Wood written Mesa Of The Lost Women. They comment also on better films but these are far more colourful, don't you think.
Then take a wild guess at how many of those films listed I actually own. (Or even those on the above list)