My only regret from the 2005 season was a nice buck I failed to close the deal on in Greene County Missouri.  I usually open the MO rifle season on a family farm south of Springfield.  There are always a great deal of deer, and most years I get a chance at an 8+ point buck.  The buck I screwed up on last year was a basic 10, symetric and reasonably tall.  Unfortunately I had a dinner party that night which caused me to force the issue with him.  Last I saw he was headed West and I never took a shot.  
I intend to head that way again in a few weeks.  Hopefully with a couple of Kansas deer in the freezer by then.