Actually, by "that", I meant $1.

Therefore, when Bob runs his line and interpolates $0, he will end up saying "Hey, Bob."

No, because "Bob" is the program in this case, so he would be referring to himself if he used $0 because $0 is the name of the script that is running.

redmist
redmist.dyndns.org
email::redmist

Right, so if you name your child '$0' (note the non-interpolating quotes), when other people try to refer to him/her, they'll force interpolation.

$Bob->Salutation($0);
[download]

Bob: Hey, Bob.
$0 : Why are you talking to yourself...?


...and this may very well be the geekiest conversation I've ever had. ++ for that! :-)