This documentary - filmed exclusively for the 2004 DVD release of "Bubba Ho-tep" (which, incidentally, is still available to purchase a year after its initial release despite having been a "limited edition") is an insightful look into the making of the cult hit.
The documentary's best parts are when it exposes the truth behind decisions, such as when star Bruce Campbell contacted director Don Coscarelli because of his concern about the penis gags in the script - he wanted to make sure nothing would be shown in detail.
Director Coscarelli tells of how he originally stumbled upon the short story in a collection by one of his favorite authors, and how he immediately thought it would be a great movie.
The making-of included on the DVD isn't great, but - like the movie - is entertaining and different. If you rent or buy the disc, make sure to watch this along with the "King" commentary on the film itself, which is very funny.