How about demonstrating Executor (the Mac emulator).
I've tried it just now - it's pretty cool.
abel
-- /v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^\
Alexander L. Belikoff |o ... o|
(abel@wisdom.weizmann.ac.il) |o 3314 signal(SIG_CTHULHU, fhtagn); o|
|o 3315 pause(); o|
Berger Financial Research, Ltd. |o ... o|