TiPb iPhone Forum user shaolinfinest let us know last night, and many others have since confirmed, that Best Buy was starting to give away InvisibleShielf protective side films for iPhone 4:

I'm not sure if this has been discussed but Best Buy is starting to receive Zagg kits called "iPhone 4fix" or something like that. Basically Zagg sent us a bunch of invisishield sides to put on customers iPhone 4's and they are free. The only disclaimer on the kit is that it says shield and install is free but install is up to the associate if they want to put it on or not. Before going in, call your local Best Buy if you are like me and don't want to put a case on it. I installed the sides today and it was easy to put on and feels ok so far.

Whether or not InvisibleShield provides any protection from signal loss if you're prone to such things in your area is debatable, but it's interesting to see how other retailers are competing with Apple's free bumper program.

Speaking of which, the TiPb iPhone 4 store has the full on front-and-back-protecting InvisibleShield and BodyGuardz in stock, and the Case-Mate Clear Armor available for pre-order. Just don't use as much liquid to apply it as Dieter did...

We've also started to hear that folks are receiving their free Apple bumpers, in some cases a month or more ahead of the previously suggested delivery date. Those who asked for 3rd party cases instead haven't had any such luck so far.

Of course, Apple's free bumpers are pretty much restricted to black, and the TiPb iPhone 4 store has more cases in more colors than you can shake a gyro at, so check out Leanna going red, or pick out a color all your own.

See Apple and Best Buy, you don't get to have all the fun!

[Okay, that was snarky enough to earn a "sponsored" tag]