Great shots,
.
What were these shot at, and with what gear? Raw/Tiff/Jpg? I love the fact that even though you were shooting pretty open, and really fast, there's little aparent grain. That's the sign of a quality ccd, and quality optics.
It looks like you have some pretty wicked vignetting going on though; don't know if that was on purpose of if you just happen to be using a wide-angle lens at a really low f-stop.