Umbrellas of Cherbourg
Most people would rather pull their toenails off than watch a musical. Tell them it also has not one spoken (as in unsung) word and sawing off their foot sounds like more fun.
I'm still trying to convince a friend of mine to watch a movie I proudly list in my top five, and I can't get her past the first few minutes (men prancing and singing in a garage apparently do nothing for her).
My game plan is to keep her watching long enough to be seduced by the color palettes, costumes, outstanding score (and young Catherine Deneuve, dammit!) but so far I've been unsuccessful.
I'm so certain she'd love it, that I've considered kidnapping her, binding her to a chair and taping her eyes open. Too far?