I've just released the first public beta of my new tooltip plugin for jQuery, named qTip. Hopefully lot's of you who used my previous Simpletip library will migrate over and help iron out any bugs you might find!
The site is live now at: http://craigsworks.com/projects/qtip/
Hope some of you can put it to good use!
Edit: Doh! Just realised a regular member of these forums uses the same name for his tooltip script! If you're looking for Qtip Effect you can find it here.