Saturday blast from the past: what is, or will be, your old school science cred?

A conversation with a friend who can code in FORTRAN reminded me to re-up this old post of Meghan’s. What’s the scientific or academic thing you’ve done or experienced that someday will make you seem really, really old? Both the post and the comment thread are fun, you should read them. We all deserve more fun than we’re having right now.