I see your brisket came out great, from your other post. If you want to try something different, here's a brisket recipe with injection. You can substitute any full-bodied beer for the Foster's (that's just my preference).
http://smokinitforums.com/index.php?topic=979.0
Try a full packer-cut sometime instead of a flat. While the flats are convenient, and a lot smaller, the packer (which includes the point) tends to cook better. But hey, your flat turned out great!