Blatantly nicked topic from one of the MTB sites I frequent, but what has been your top 3 bike bits of 2007. Doesn't have to necessarily be a new product, just new to you in 07.
Mine are:
1. Wellgo MG1 magnesium pedals - best pedals I've ever used
2. Shimano DXR crankset - nice and stiff and light and strong. Very easy to install and service too.
3. My dialled bikes prototype 4X frame - based on my Ti cruiser but made of Sanko cro-mo with geometry adjusted to take a short travel fork