Eye catching “lavalamp” navigation effect.
Highlights of some kind (a background or an underline) follow you around as you mouse over the different links in the navigation.
This Jquery plugin lets you easily create tabbed content.
Super-smooth flash-like navigation with CSS & JQuery
Kwicks does accordion with an awesome fluid animation.
Tabbed navigation without the jerks or jumps.
Create a digg-inspired navigation menu.
Slot Machine Navigation
Navigation effect based on slot machines.