Binary package “sm” in ubuntu oneiric

Displays a short text fullscreen

 Screen Message will display a given multi-line message as large as
 possible, fullscreen and black on white. You can specify the text either
 when launching sm, or edit it while the program is running.
 It is useful to send messages across a room, e.g. during an university
 lecture. For fast startup, it is recommended to bind it to a key in your
 Desktop Environment.