The audio from the 2008 Resolved Conference is now available online. You have to register for free in order to download the audio. Speakers include John Piper, C. J. Mahaney, John MacArthur, Rick Holland, and Steve Lawson, etc. This past conference was on the doctrine of Heaven and Hell.
For other excellent sermons on Heaven and Hell you can go here.
The name of this conference was inspired by Jonathan Edwards’ Resolutions.

I appeal to you, brothers, to watch out for those who cause divisions and create obstacles contrary to the doctrine that you have been taught; avoid them. For such persons do not serve our Lord Christ, but their own appetites, and by smooth talk and flattery they deceive the hearts of the naïve. (Romans 16:17-18)