I would say Petey planning his first mission as an official officer of the crew as well as the resident AI was pretty awesome. Tagon's Toughs are no slouches at getting paid inventively but in his first attempt at a mission Petey managed to get them paid "five times for a very easy job". Then he just increased the scale of his plans from there.
Schlock goes up against a sniper who has been dogging him for a bit. The last time he fought him, his rapid-fire micro-grenade launcher wasn't hitting the target. This time, Schlock knows exactly how long his grenades are going to take to drop, and he's kind enough to let the sniper know.
While we occasionally hear that the clothing-like Powered Armor bestows Super Strength, we rarely get to see that feature come into play. Then we have the waif-like Ensign Ventura, surrounded by disabled comrades and an angry mob, and...yikes.
Tagon's "I don't tell you how to remove bullets. Don't you tell me how to make killing machines back into little girls." is also pretty damn nice.
Plenty of Petey references here already, but for this troper his finest hour is when the month of strips where we find out he isn't dead, starting here-ish. Especially all of the P.D. puns...
The ore freighter Captain inadvertently becoming the principal of Qlavical through an improvised defense of his planet involving "Rocks, ramming and balls of steel" (all three are literal. Even the balls of steel). "Show me your DREAM MESS!"
Gripponan smart soles definitely qualify as force multipliers. With the right skills, they allow for amazing feats. And with the right intel, amazing feats become legendary ambushes.
The entire Longshoreman of the Apocalypse arc is one for Schlock, as he proves himself not only to be capable of forethought and careful restraint, but also proper leadership and quick, creative thinking, such as when he decides to use goober rounds to save his squad after their transport is shut down in mid-flight.
She's always been delightfully snarky, but Tagii really gets to show her stuff in the Random Access Memorabilia arc, from providing overwatch against zombie supersoldiers to effortlessly curbstomping an attacking warship flotilla. Keep in mind that these zombie supersoldiers were easily on par with Kevyn's streak of badassery during The Pointy End of the Stick.
Tagii, trapped inside Ennesby's brain, manages to trick him into transmitting her distress signal. Keep in mind that she was literally incapable of having more intelligence than him, because she was trapped in his brain. And she still outsmarted him.