Very nice pano! The stitching is flawless as far as I can tell! Really good composition! Well done!
One of these days I'm going to take the time to take exposure braketed shots for a pano and then stitch each exposure layer together seperately and then use Photomatix to combine them into an HDR. I'm certain it has been done before but I haven't seen an HDR pano in my wanderings around PBase yet.