Heroics already bore me (though I haven't done SFK yet). I'm really enjoying the raid content however, but that's only 3 nights a week for us. They're a lot of fun, and I doubt I'll be bored of them for a good while.
In my "spare" time I just queue for BGs while Archaeologying. The archaeology isn't fun, but arena/BGs are pretty fun at the moment, since nobody massively outgears at the moment.