Ok, let me try and answer a bunch of posts at once:
Re: Super Mario Galaxy @ $39.99 in LA:
I'm willing to bet the $39.99 Super Mario Galaxy is a misprint in the LA papers. Why? Because of the "Everyday Low Price" logo next to the price. That's NOT the everyday (MSRP) price. Plus every other location has it listed as $49.99. This is a great ad to use for pricematching though.
Re: Avail. Thurs. by 6pm:
If Fry's lists Assassin's Creed as Available Thurs by 6PM, then that means they expect to receive their shipment Thursday afternoon. Even if Fry's were to receive the game on Weds, there is NO GUARANTEE that the price will be $39.99 until Thursday. I'd expect that if you find a copy on Weds., it will ring up as $59.99.
Re: Non-local Pricematching:
Pulling off a Price Match without a LOCAL ad requires a LOT of luck. First, most stores will only accept ORIGINAL ads. If you download an ad and print it, you've already cut your chance to 50%. If the store you are going to is not within a 30 minute drive of a Fry's, then I'd put your odds at about 10%.
Now, there are a lot of "non-savvy" clerks out there, especially in some of the less populated areas of the country. And there's definitely some art in guessing which checkout clerks are familiar with pricematching, but not so clueless as to require checking with a manager.