May 19th, 2008
I Love Stars does one thing and does it well: it sits in your menu bar and pops up the star rating of the song currently playing in iTunes, and allows you to amend the rating by clicking on the appropriate number of stars.
Neat, compact, unobtrusive and free. What's not to like?
(NB: I Love Stars requires Mac OS X 10.5, aka Leopard, to run.)