Seasons of Death
One thing that irks me about the final season, the last episode on the disk. Knowing the show has been canceled and off the air for years with a movie wrap-up still in the air (though I hear things are moving along steadily these days)... why oh why did they put Jack taking care of a baby as the final episode?
Personally I think Seasons of Death would have been the perfect last episode. Even if a movie did not come out, at least you could point to that and say they went out with a bang nonetheless. The episode itself carried the essentials of Jack's story - what seems to be an endless journey, conquering countless enemies, with no rest in sight - and him just walking off alone is how it ends. Come on, would it have killed them to air that episode last in the series?