Well yes, for starters
http://en.wikipedia.org/wiki/Hwang_Woo-Suk
There are countless examples of bogus science too, mostly committed for personal profit, the motive is obvious. A harmless one is the astrology columns in every mainstream newspaper or magazine. Then there's every religious text starting with the bible, too.
The trouble is no-one will (or should) come straight out and say they're frauds until proven either by the relevant academic body and possibly a court. Otherwise you'll be charged with defamation.