This essential question wasn't asked yet, so here we go.
This is rapidly becoming a hot issue across the entire network: how to promote your site and how to reach out to the experts and pundits in your industry. We can come up with budgets and promotions but — more than any other issue raised here — the means and ideas about how to reach your target audience HAS TO come from you and your community. Has to. Has to, has to, has to! We simply are not experts in your field. We don’t have the the connections nor the experience you bring to the table. You are both our evangelist and our ambassador.
One suggestion per answer I guess?
 I'm bumping this up to the top because we're working on this here at SE Global Domination HQ, but I want to know what our users -- the people who are really using our site -- think and feel about this. I've got some blogs and twitter accounts being followed, but who are you following, where are you following these people, and why are they interesting/important/influential? Don't worry about Community Wiki; I want the community vote-up aspect live in this discussion.
And I didn't want to make a duplicate post, to be honest. --Aarthi Ψ, CHAOS Team