i put on the movies/media that
(1) I like but nobody else does (e.g. the "Phantom Menace") it seems, and
(2) everybody thinks are bad, and I think that too (e.g., "SHowgirls"), but are SO BAD I just can't look away.
My friends and family get on my case mercilessly (in fun of course) in both instances -- hence my "guilty pleasure"
Most people don't like classic movies (some members here excepted). So liking them could be seen as fitting the category by the population at large. Men In White is a melodrama for example
I like some musicals too such as singing in the rain, meet me in st louis, little shop around the corner, good old summertime ... they definitely fit the category.
Probably the one I watched last night also - romantic comedy