I just installed a $7.50 (free shipping) 36 LED light that I got through DealExtreme. Comes with the adaptors to plug right in to the light socket of your dome light. Took about 30 seconds to install, and man does it light things up! Well worth the price, no matter which country it was made in (took a good couple weeks to show up in my mail box.
T10/BA9S/Festoon 2.28W 12V 36-LED Car Ceiling Dome Light Bulb - White
Item# 18062
And while I was at it, I installed a red LED in front of the console, beneath the radio. Now I can clearly see the entire console area at night (though it's a little brighter than it needs to be).
T10/BA9S/Festoon 0.9W 12V 6-LED Car Ceiling Dome Light Bulb - Red
Item# 16098