Best accessory to help navigate through Windows 8?

I just bought an Alienware Andromeda R5 today because they were on clearance for a great price (plus windows 8 upgrade for $15) and it turns out Microsoft let me install full Windows 8 Pro today..go figure.

I love Windows 8 especially after getting used to running the release preview - my question is do you guys have any suggestions for peripherals that can help me nav and do gestures in the UI? Are there any wireless track pads that have good ratings?

Thanks

Marc