A big triple YAH!
The gentleman is actually doing jerk presses behind the neck (or behind the neck jerk presses...whatever). A very advanced movement, which a lot of Olympic/strongman lifters include in training. If new to this exercise, would not recommend doing this style. The regular/standard version, when getting the proper form can be vital. It is an exercise that one has to learn to do correctly....like most exercises.
Some have a problem with the PBN because they lower the bar too low behind the back (at the nap of the neck is the usually stop position...not lower...some stop a bit below ear level), use too wide a hand grip for body type (extra wide is not advised) or try using way too much weight without a proper warmup. Light warmups can be very important in this movement. After a while, if having trouble with the lower back (with any form of OHP'ing) than place one foot ahead of the other, with a slight bend at both knees). Should relieve any lower back tension.
The front press is another ultra mass builder for the whole shoulder girdle. Like the PBN, can use the jerk press if wanting to include that. Might suggest pressing the bar (in any style..front/behind) from a PR/cage/supports...etc. Now a lot of guy's can clean 205+ when getting ready for rep'ing out presses, but most BB'ers will be better served if using a rack of some sort.
If your born with a wide to extra wide shoulder structure..than lucky you. If born with regular, to narrow, shoulder structure than working hard on both these shoulder presses can make up for a lot that genetics never gave you. Seen guy having to buy larger size shirts after following a focuses OHP scheme. Seems to add mass at a fairly good rate for most. Presses and jerk presses have been a staple for many large athletes.
There are also Push Presses, with a lesser actual grip and the weight resting mostly on the heel of the palm. Exceptional pressing exercise, which some bencher's also use, from time to time.
Good Luck