I remember watching this a few years back and being turned on to the point of orgasm by the blow job alone.  I seldom get off on a blow job, watching one or receving one, but this one in particular is compelling. 

Notice the spit/pre-cum exchange in the kissing between sucks.  Notice the way in which this guy's hips are engaged in every thrust.  There is nothing sexier in a blow job than watching a guy's hips in full motion, full swing, full freedom and availability to the task at hand (I love it when a guy, either fucking a face or an ass, swivels his dick around in a circle--sexy!).  Most guys, in life and on screen, that are stiff in fucking are awkward and uncomfortable simply because they aren't using their hips.  This guy, however, does and the effect is mind-blowing.

His command as he fucks this girl's ass is impeccably shot.  I love angles where the camera looks up at the guy as if he's a titan, showing off his stature, his muscles, his tan, and the entirety of his body (as opposed to shots taken from above looking down at the guy, making him dimunitive).  It allows us a glimpse not of a head, a torso, or a dick at work---but an entire godly being in full mating season.  This guy in particular shoots well from this angle.  It makes you wanna be under him, whether to have your ass fucked or your mouth penetrated.

Notice at the end when he cums---the PASSION in his grunt and his groan.  This guy's fucking not for a pay cheque, not for the camera, but for his own personal pleasure. 

Not to mention his military hunkiness, which completely matches his type-A alpha-male personality: a demanding drill seargent.

Enjoy.