I know it's not a movie, but there are a bunch of cable shows which feel to me more like long form cinema than television. Another obvious example is the outstanding "Mad Men".

I just learned about True Blood as it starts its second season and I've been working my way through the first season. So far it's everything you would expect from a series created by Alan Ball ("Six Feet Under"), starring Anna Paquin, about vampires. It's racy, dark, and intriguing. It's at its best when it sticks close to its characters and feels a bit ham-fisted when it goes for obvious social allegory a la the incredibly-overrated "Battlestar Galactica".

If you might be interested in a sexy, violent character drama about vampires, this is as good as you're likely to get.