I'm pretty new around here, but I've been doing quite a bit of reading and learning from this site in preparation of getting my new baby, my 07 IS. She's the first car I've owned that I took more than just a passing interest in my washing and appearance techniques.
Granted, she's only 2 months old and has <1000 miles on her, but she is my daily driver (all 3 miles to covered parking

).
Steps:
NXT Wash
PPP applied by hand 4 weeks ago
x3 coats of PGP (one a week...skipped one week)
x3 coats of TTGP on the tires (1 on the wheels)
Ultima Detail Spray + after every wash.
Now you'll probably see some spots where I went too heavy with the PGP. I applied it the night before, but I don't think the weather conditions are optimal for drying (high 90's and 70+% humidity). But even those streaks were gone by that afternoon.
And a picture of the tires/wheels for those looking for a shot of the TTGP:
