I love this vehicle. I've owned several autos in the past, including two Toyotas and a Chevy Trailblazer ('04). I usually go pretty basic on them, then look at the owner's manual later and realize all the goodies I didn't have on mine. All that has changed with buying the Rainier. If this truck were a movie, it would truly be a "sleeper." I don't know why more people haven't discovered all the virtues of this vehicle.
I love the driver information center and all the choices you have on things, right down to how you want the doors to unlock when you shift to park. It will even let you know if you have left the gas cap off when you fill up. The magohany and leather steering wheel is a work of art.
Can't think of many, other than the cupholders so many have already mentioned.