The new Apple Magic Mouse has no buttons, has bluetooth, cost $69 and it mimics the multi-touch capabilities of the iPhone.
From Apple’s Press Release: Magic Mouse features a seamless touch-sensitive enclosure that allows it to be a single or multi-button mouse with advanced gesture support. Using intuitive gestures, users can easily scroll through long documents, pan across large images or swipe to move forward or backward through a collection of web pages or photos. Magic Mouse works for left or right handed users and multi-button or gesture commands can be easily configured from within System Preferences.
The Magic Mouse laser tracking engine provides a smooth, consistent experience across more surfaces than a traditional optical tracking system. Magic Mouse uses Bluetooth wireless capabilities to create a clean, cable-free desk top and its secure wireless connection works from up to 10 meters away. To extend battery performance, Magic Mouse includes an advanced power management system that works with Mac OS® X to automatically switch to low power modes during periods of inactivity. The wireless Magic Mouse is powered by two AA batteries which are included.