I will put up with a terrible movie if the lead actor is just the right kind of hot.
Exhibit A: That old movie "The Bride" - Not worth seeing, except for...
Exhibit B: Lead actor STING
Holy shit, but Sting, in this otherwise mediocre movie, is the very embodiment of all that is hot in this world. I want to get it on DVD, if only to then cut out every scene in which he doesn't appear, then save the precious remainder in some obscenely high-quality format and just...loop it. Forever.
As a very nice bonus, Cary Elwes (the "As you wish" farmboy guy from Princess Bride) is also his too-gorgeous young self in this movie, too. Can't complain about that.
This picture was, sadly, the best I could find out there of Sting in his role of Dr. Frankenstein.