Yes it does, but if you just stick $ref; out there by itself, or with () after it, perl doesn't get that that's supposed to be a function call and throws a syntax error.
You pretty much have to have the & as far as I know.
Or you could use $ref->(); It's monday and I'm being a blonde.
Update:Thanks chromatic, Fletch, and shotgunefx for the clue-by-four-ing.
perl -l -e "eval pack('h*','072796e6470272f2c5f2c5166756279636b672');"
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