I've heard a good number of sermons on Genesis 1, a few live, and a few via MP3s. The live ones include those that triggered this blog to start a few years ago: a series on Genesis at my local church.
But I've heard more since then, particularly at the sites linked from this blog.
The MP3 variety have, I must say, been better sermons. They have taken the hearer more to thinking about Christ than the live ones! Perversely, the local sermons, in a 'Bible-believing' evangelical church, did not so take up the challenge with the warmth, passion, logic and drama that the linked ones do.
Have a listen to:
Joseph Pipa on the Doctrine of Creation
Gary Hendrix also on the Doctrine of Creation
Rick Viz, of course, on the Fact of Biblical Creation