I don't tip anyone except the doormen and maintenance guys in my condo. I used to give my hair dresser a present at Christmas but that was a gift from the heart as I had known him for 20 years and I would enjoy finding him chicken objects as he collected chickens.
I don't tip the valet guys but that's because I generally park my own car -- if I use their services I will tip them at that point.
I don't tip the mail person or newspaper delivery person.
I top hair personnel at my current salon when they perform services and I am fairly generous to waiters all through the year and I don't do any adjustments in December.
I don't quite understand the whole culture of tipping. FWIW I have stopped exchanging meaningless gifts with people and completely eliminated holiday cards except for a few people who I gift with a personal mix CD compiled for their musical sensibilities -- but that's a quasi-gift.
Some days I pray for Silence, Some days I pray for Soul,
Some days I just pray to the God of Sex and Drums and Rock 'N' Roll.