Guess I should answer my own questions first. I suspect Seattle is totally off the map (in excess) when it comes to tipping, so I'm curious to hear from the geographically varied members of this tribe.

How much do YOU tip:

For a meal/drinks at a restaurant, ordered from a waiter/waitress? 20%, unless the service was exceptionally bad.

For drinks ordered directly from a bartender? A buck per drink; a little more if a lot of work was involved.

For counter-service food (deli, bakery, etc.)? Never sure what to do here. Do I need to tip if I'm just buying a loaf of bread at a bakery?

At a coffeeshop? I don't drink coffee; I usually just leave some change for my tea. It doesn't take much to dump a tea bag in some hot water, right?

Taxi driver/shuttle bus driver/tour guide? 15-20%, more for a tour guide offering more service than just driving you around.

At a salon (hair styling, manicures, waxing, etc.)? 20%. I forgot to include a massage therapist here--do you tip for that? Even if it's a one-person operation?

Maids/housekeepers (at a hotel or wherever)? A buck or two per night, with a note so it's clear that I didn't just forget my money in the room.

Valet parking attendant? Never sure about this, and it rarely comes up.

Porter/bellhop (person who carries your bags)? A buck per bag.

Doorman/concierge (um, what exactly do they do, anyway)? Really, are you supposed to tip the doorman at a fancy hotel just for opening the door? I don't get it. And the concierge--I guess you should tip if they make you a dinner reservation or something? How much?

Tow-truck driver (for unlocking your car, bringing gas, changing a tire, jump start, etc.)? I've never tipped these people, but now wonder if I should. Just a few days ago I had a guy spend an hour trying to unlock my car, which I had stupidly left my keys in. I didn't tip him, mostly because I had no cash and I had procured the guy through my AAA card. But then I felt bad later and thought I should have tipped him--these guys are nearly all private contractors, after all.

Full-service gas-station attendant (where they wash your windows and check your oil)? I know this comes up rarely for most of us these days, but in Oregon it's a state law, so ALL gas stations are full service there. (My dad, who lives in Oregon, sarcastically calls it the "Oregon State Employment System.") Should you tip them?

20% for everything unless the service was lousy then it drops to 10%.

How much do YOU tip:

For a meal/drinks at a restaurant, ordered from a waiter/waitress? 20-25% unless the service sucks, then they get 15%

For drinks ordered directly from a bartender? $1 per

For counter-service food (deli, bakery, etc.)? $1 or $2, depending on the order

At a coffeeshop? spare change or $1

Taxi driver/shuttle bus driver/tour guide? $3-$5 depending on the total cost of the ride

At a salon (hair styling, manicures, waxing, etc.)? $10-$20, depending on the total cost and how much i think the salon is ripping their employees

Maids/housekeepers (at a hotel or wherever)? $5

Valet parking attendant? $5

Porter/bellhop (person who carries your bags)? $5

Doorman/concierge (um, what exactly do they do, anyway)? $5 though sometimes more if they are 'influential'. i tipped the concierge at a hotel in vegas $100 and we got well taken care of the entire weekend we were there.

Tow-truck driver (for unlocking your car, bringing gas, changing a tire, jump start, etc.)? $10

Full-service gas-station attendant (where they wash your windows and check your oil)? I never do this.

For a meal/drinks at a restaurant, ordered from a waiter/waitress? 15% - 20%

For drinks ordered directly from a bartender? $1 per, though I'm know to leave a quarter if they ignore for too long. It's just enough to let them know that I didn't just forget to tip them.

For counter-service food (deli, bakery, etc.)? Whatever spare change I have, or a buck if they were exceptionally nice

At a coffeeshop? 50 cent minimum, up to about $1.50.

Taxi driver/shuttle bus driver/tour guide? Taxi: I figure it out on the fly. Others don't happen

At a salon (hair styling, manicures, waxing, etc.)? ~$5

Maids/housekeepers (at a hotel or wherever)? ~$5, whatever I have in singles.

Valet parking attendant? I park my own hooptie

Porter/bellhop (person who carries your bags)? I carry my own bags.

Doorman/concierge (um, what exactly do they do, anyway)? I find my own diversions.

Tow-truck driver (for unlocking your car, bringing gas, changing a tire, jump start, etc.)? I hope I don't have to tip the tow truck driver who just charged me $80 for 30 minutes work.

Full-service gas-station attendant (where they wash your windows and check your oil)? DIY

God all those long answers. Tip or your sevice you received! about 10% for meals and if they guy or gal tote your crap a long ways ( was it heavy)????. Judge by them, the service and what they had to go thru to get your stuff to room. A dollar a bag is WRONG! Just Tip. SDealers need tips 10% again.. Start with 10%
I once was a a five start hotel...early in Morning about five suites, me casual, waiting while one lone valet was getting cars.. They were tipping him a buck. Cheap ass holes!!!!. I gave him a twenty. He deserved it. Never broke his service attitude.