I finally have a Macbook Pro! Fun! Hey did you know (as if this was the coolest thing about getting a Mac) that you can use the -A switch to have it start beeping when your target host is no longer pingable or vice versa?
Beep when host is not pingable:
ping -A google.com
Beep when host is replying to ping:
ping -a google.com
UPDATE: Funny, I haven't looked at the man page for ping in ages and you can apparently do this on Red Hat, etc., too. (Duh.) Who ever looks at the man page for something as simple as ping? LOL.