According to Microsoft Word, these sentences are grammatically correct:

• Marketing are bad for brand big and small. You Know What I am Saying?

• It is no wondering that advertisings are bad for company in America, Chicago and Germany.

• Gates do good marketing job in Microsoft.

• Microsoft the company should big improve Word grammar check.

Sandeep Krishnamurthy, a University of Washington professor, has posted documents riddled with errors that slip through Word’s Grammar Check program. (Via Slashdot, thanks to Mr. Maud.)