The WowWee Bladestar is possibly the most advanced indoor flying device with its autonomous flying skills.
WowWee announced the Bladestar at the CES 2008 and it sells now for only $40.99 on Amazon.com.
Possibly the coolest feature is the ability to steer the Bladestar with your hands buy just pushing them gently towards the Bladestar - definitely looks cool.
The Bladestar Flyer can avoid walls, ceiling and other obstacles with its sensors.
You can also choose to steer the WowWee Bladestar in Pilot mode with an IR remote. In battle mode you can face off with a friend in a Bladestar dog fight. A fire button lets you take down your opponent.
More details on Amazon.com.