The title can certainly help. Take Lesbian Vampire Killers, for example.
According to Wikipedia:
The writers [Stewart Williams and Paul Hupfield], who at the time were both working in the comedy development team at MTV, were challenged to come up with the most commercial film project and title ever to pitch as a £50k direct-to-dvd project, starring Stewart and to be directed by Paul. Lesbian Vampire Killers was the end result.Following the links you see that in 2006 the film was taken to Cannes by AV Pictures as little more than the title and a poster (left) - yet it was the project that BBC News website readers were most eager to learn more about.
Sitting on his balcony in Cannes, AV Pictures managing director Vic Bateman says: "It's a great poster."Now, with James Corden and Matthew Horne in the lead roles (and on the revised poster), it's set to open nationwide on 20 March.