A group of Greenpeace activists, including one dressed up as the , visited a Microsoft Store in Palo Alto, California Thursday.

For those who don't know, Clippy once offered advice (mostly unwanted) to Microsoft Word users. Thursday's Clippy look-alike held up a sign in the shape of an advice bubble, which asked if the Microsoft Store employees wanted to build a cloud based on clean or dirty energy.

The option to "Don't show me this tip again" was included on the signs.

The environmental group claims that Microsoft's data centers source much of their electricity from coal and nuclear power. Wyoming and Virginia, where Microsoft is continuing to build, are "tied to dirty energy," Greenpeace says.

We're impressed at Clippy's lasting power. He was the default animated character in Microsoft Office Assistant, an interactive user's guide that came pre-installed with Microsoft Office bundles from 1997-2003.