MacBook Air screen is too bright even on the lowest setting

Question

Is there a tweak, hack, or piece of software that can adjust the brightness of the MacBook Air's screen below the settings that MacOS X allows by default?

In low light the lowest brightness setting is too bright for me (and the setting after that is black so that doesn't work at all). :-)

Answer 1

I use Flux which helps me a lot at night. It gives you a somewhat lower brightness and the colors are adjusted according to the light you choose.