I'm a collector. In addition to my Star Wars, I have my childhood coin collection, interesting old books, the odd antique item, anything really. Not quite a hoarder but I don't like to get rid of things.
Politics. Which leads me to collecting all kinds of political articles.
I have this gnawing desire to make a movie based on Camus's "The Stranger." I have an utterly brilliant conception for it. My mother told me I was "obsessed" when I was explaining it to her, simply because I've mentioned the book several times over the years.
I have many minor obsessions - muppets, monkeys, and Earl Grey tea (tea is an obsession in general).