This is somewhat akin to those experiments where people try to run over iPhones or iPods with a car, just because they can do it. One would have to ask, are you that dissatisfied with your Palm Pre that you want to drop it in beer?
According to the video, this was the third Pre this person owned, as the screen kept cracking. His boss said he would buy him an iPhone if he ditched the Pre, so there you go.
The beer? Miller Lite.
The sad thing is that neither the Palm Pre nor the iPhone can play Flash in their browsers, so neither can view this as yet. On the other hand, the Pre is going to get it soon, whereas the iPhone ... who knows if it will ever get it?