Watching a movie.  I wrote about six pages so far and will continue in about two hours with the other four.  I'm enjoying writing this one so far - a lot of this one is coming to me as I write, which is my favorite way.  The central plot device doesn't actually kick in until part two, so part one is a character study and covers many decades.  I'm constantly having to stop and research stuff, so that's always fun, too.