i do a light warmups. 5 min. then hit stretches on muscles that will inhibit the motions i plan to do.
lower body: glutes, hams, inner thighs, low back, chest, lats (so i can get my hands on the bar)
upper body: low back (never hurts to do more here), chest, shoulders, lats
light ROM stuff and im ready to rock.
if you think you'll be sore, definitely get to stretching post workout. if you take the hint from DC training, or have done it, you will see how much it reduces DOMS and speeds recovery.