I think it's awesome that we now have the technology to be able to listen to hundreds of preachers from churches all across America and all over the world from the comfort of our own homes, cars, offices, and pockets, courtesy of sermon podcasts. I think this is part of the reason for the burgeoning gospel renaissance in some sections of the evangelical church: people who were starving for the gospel in their own churches are now able to hear gospel preaching regularly.
I think it's awful that we now have this technology that allows us to listen to the absolute best preachers in the world and thereby compare their speaking to that of our own preacher's. Our own guy may be sound and solid, competent and compelling, but podcasts from the "best of the best" have ruined us for profiting from wisdom in our very own sanctuaries. The celeb factor of a stranger kicks in, and it is hard for the "unknown" guy who is personally bleeding, sweating, and crying for us to compete. (I also think a large swath of the multi-site movement banks on this reality.)