Sure, who hasn't?
I'm using TomTom5 on a smartphone (T-Mobile MDA pro, or O2 XDA Exec, HTC Universal, all the same).
Attached to Brodit holder. Although they make special clips that grab the middle vents or besides the gear lever, I opted to use a generic-type flexible gooseneck with suction cup and attach it to the side of the middle console.
So it sits just below eye-height at the passenger side, closer than the windscreen but still out of the way.
My power is a USB cable which I router behind the dash up until the top of the glove compartment where it emerges and goes over the passenger side 'handle bar', above the airbag.
Clear description, right? Maybe I should take some daft pictures.
The a-pillar side window would be nice too, but I'm right-handed and I have a LHD car. So that position is awkward for me. But not if I had a RHD car like you all have...