The PS3 ads aren't too bad (maybe that's easy when compared to the previous efforts) but with the first and third links that you provided when they explained all the stuff about the Cell processor and Blu-Ray, I was actually underwhelmed by the time they got to the game footage.
And some people at work are still hoping for the PS3 and not a Wii (Nintendo's not on their radar). I think that it might not be until closer to or after this holiday season when word-of-mouth will really be in Nintendo's favour and not for Sony. The price and quantity of the PS3 will guarantee that, no matter what games come out for it.
EDIT: I wanted to add that Rubik's Cube solvers are not very complex at all, so it doesn't require a Cell processor. I get that it's not the point, specifically, but I still wanted to mention it.