AC/DC's secret weapon

I have been listening to a lot of AC/DC lately.
We recently purchased the double-disc DVD set "Family Jewels," the AC/DC video collection. That spurred me to listen to some of the old albums -- "High Voltage," "Let There Be Rock," "Powerage," etc.
Vocalists Bon Scott and Brian Johnson feature prominently in the videos, as does spastic lead guitarist Angus Young.
More than ever, though, rhythm guitarist Malcolm Young (far left in the above photo) remains my favorite band member.
In "Guitar World Presents the 100 Greatest Guitarists of All Time," authors Jeff Kitts and Brad Tolinski examined the role of Malcolm Young:
"Malcolm's mighty crunch, coaxed from a battered '63 Gretsch Jet Firebird, is AC/DC's great secret weapon, the standard against which all power chords are measured."
Amen!