I heard a single pair of Wilson Watt/Puppy 7's recently which had an amazing feature -- a center channel speaker that was not only wireless and requred no additional amplification but was also completely invisible.
This seems to be a trend with high end speakers as my new Sonus Faber Auditors also come with the wireless, invisible center channel speaker, perfectly matched with the left and right.
So as Plato mentioned, I guess I am one of the "purist theme" guys because my concern for listening when I "stray from the center cushion" worries me about as much as my concern for the sound when I am wandering around the house in my underwear running the vacuum cleaner.
In my opinion, these observations also hold true for "home theatre" applications, other than the occasionally effective ambient sounds through the rear channels.
Even there, however, some directors believe the rear and ambient noises detracts from the film.
Then, the whole world buys Bose surround sound systems at the mall and thinks its high end. Go figure.