It’s not exactly a Streisand Effect, but it’s pretty close. Sony wanted to keep a tight leash on their new game “Spore”, so they loaded with a ton of ugly DRM. You can only have one user account per purchased copy (husband/wife, brother/sister, friend/friend — no), you can only install it three times, and many people are having issues getting it to run properly in various modes (64-bit being the worst).
As a result, the game has already been illegally downloaded over 500,000 times on BitTorrent, and the number is rising rapidly. It’s also caused Spore, well-regarded as a very good game, to receive horrible scores on Amazon.com because of the DRM. As of a few days ago, there were 2,219 reviews and 2,018 of them gave the game just one star.
The bottom line, almost Streisand-like: They wanted to keep people from pirating the game, resulting in way more illegal downloads than if they just let people play the game they paid for.