Site menu revamp

I've decided to re-organize my website menu and some of the content. Matt thinks it should have dropdowns and I've found a cool CSS/javascript one that should work nicely, and will degrade for older browsers Son of Suckerfish dropdowns

I'm torn, on the one hand, drop downs are cool and they could help people find things faster, on the other hand, they can cause problems..

Dropdowns or no dropdowns?