More than 230,000 people are expected to visit the Oregon state fair during its 11-day run at the state fairgrounds in Salem.  The 151st edition of the Fair is open now. Fair Manager Tony Payseno says there are over 9,000 things to taste, see and do this year; hundreds of them free with your fair admission.  One of the newest features this year is "Rock-U", the interactive Institute of Rock 'n Roll Exhibit where you can play drums and other instruments.  The fair runs through September 3rd .