If you're after a little font for icons or menus or any other design that requires simple text interfaces, you probably could do much worse than to try out Jason Kottke's free Silkscreen.
Silkscreen is best used in places where extremely small graphical display type is needed (duh!). The primary use is for navigational items (nav bars, menus, etc.). However, you can also use it for image captions and the like...wherever small type is needed. Silkscreen also works very well at large point sizes if you're looking for that chunky, old school computer look so popular with the kids today.