Close is relative Mark, Serious is 60 miles from my house. But ya there are several local roasters that put out outstanding product, IMO. And most have good websites etc. Houston is actually one of the large hubs for the coffee trade in the world. There are several Free Trade Zone coffee warehouses here. I'm sure that helps the local roasters to try out new things. If it wasn't so hot here the coffee scene would be nuts. As it is it's as developed as the Pacific Northwest area.
This is another one of our favorite roasters here:
http://katzcoffee.com/store.php
We just finished up a bag of the Bayou City blend, amazing really. I actually prefer this over the Charlie's in some ways.