Watched Dan Kaminsky et al try to explain to some congresscritter Weiner
that the internet (upon which civilization is now built) is completely insecure.
Kaminsky was a surprisingly good speaker, only a few tech idiosyncracies slipped in "its a solve"), always using "software" for executables.  He concentrated on DNSSEC which is a good idea but hardly sufficient.  (The DNS cache poison hack is
Kaminsky's current claim to fame)  It was clear at a couple of points that the congresscritter didn't get it, didn't understand the answer, or asked a nonsensical question.
Still, it was entertaining enough for me to watch.