I can’t (unfortunately) remember where, but somewhere on TeX.StackExchange someone mentioned the show2e package. A simple, but great idea! Now, instead of
\show\some@strange@command
aaaarghhh!
\expandafter\show\csname some@strange@command \endcsname
you can just say
\usepackage{show2e}
\showcs{strange@command@name}
What a relief! Big kudos to Manuel Pégourié-Gonnard for this package.