Metroblogging Seattle reports on some stealth Zune marketing at local nightclubs. Microsoft sets up Zunes to look at, apparently, but not to listen to:

In what seems like a missed marketing opportunity, however, none of the Zunes are actually driving the club's sound system -- the speakers are purely for show. And while the secret (marketing) codeword would get you into the show for free, there was no giveaway or other opportunity to win a Zune itself. You'd think that with all the "social" features of the music player, that loaning out a few for the duration of the evening (maybe leave an ID or take a card imprint to ensure return) would be a nice way to demo the wireless music-sharing feature.