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Davertron
I like this idea a lot; however, I don't like beeps. Ubuntu (and possibly other linux distros) now supports desktop notifications via Notify OSD. So instead of having the other machine ssh to me and beep, instead I use a utility called "notify-send" to create a desktop notification pop-up. You can install notify-send on ubuntu using:

sudo apt-get install libnotify-bin

Then call notify-send like so:

notify-send "Back to work."

The text can be anything you want, and you can also supply a summary, an icon, etc.

derwiki
That's a good alternative. Can you do something like that in OS X?
illumin8
I've been doing something like this for a LONG time when I have long running jobs and want to run down to the pub for a beer:

# dosomething;mail -s "Job is done" XXXXXXXXXX@mobile.att.net

That way I can be anywhere and just wait for a text message on my iPhone to let me know the job is complete!

Isn't *nix great?

Davertron
This is basically what I used to do as well, except just to my normal e-mail account.

Love *nix :)

doubleukay2
I use "ping -a localhost" to annoy myself when a job finishes.
antirez
I want a neural interface to "feel" that my important processes are up and running. In every given moment I want to feel the functions getting called, smell the call frames, and the rounded corners of the system calls returning values different than -1.
ars
You really need to read Jupiter by Ben Bova.