Best ‘straight-to-DVD’ film ever released?

[Groke]

I just watched Unthinkable and was really surprised when I found out it had never really got a ‘theatrical’ release in cinemas. It had a pretty good cast, including Samuel L Jackson and Carrie-Ann Moss, but it seems to have flown below radar (possibly due to its controversial subject matter, i.e. terrorism in the U.S.).

I just wondered what other films people would rate that were released straight to the walls of Blockbuster?