This post is not about those completely nonsensical Seinfeld and Gates ads. And no, talking about the ads in this case really isn't a good thing, since we question the sanity of Microsoft's decisions.
This post is about the more recent "I'm a PC" advertisements from Microsoft. These ads remind viewers of the Apple ads. We think about Apple the entire time. We think how seriously Microsoft must take these Apple ads and the products behind them. Microsoft wants us to take Microsoft seriously, so, we in turn have to take seriously the things Microsoft takes seriously, and that's Apple.
Great when your competitors are paying for ads that make consumers think about you as something to be reckoned with.