I am unlikely to answer MOST of the messages I receive. So don't get offended by lack of response.
Movies: The Mummy, Secretary, Grand Budapest Hotel, Holiday Inn, Sin City, Goodfellas, Monsters Inc.
Shows: Game of Thrones, It's Always Sunny in Philadelphia, Mad Men, Futurama, BBC documentaries (particularly David Attenborough's)
Music: Mostly everything, depending on mood.
Food: Variety. I like tons of different types of food, and I'm definitely a foodie!
And you have more to say than "hi" because while that might work in person, it's a really poor way to start an email exchange.