(Portland, OR)  --  A man who's fondly remembered as a pitchman for electronics and other products sold in the Portland area is gone.  Tom Peterson, who suffered from Parkinson's disease, has died at the age of 86.  The flat-topped Petersen began selling home electronics in 1964, and his face and voice became indelibly linked to Portland after decades on the local airwaves.  Peterson leaves behind his wife, Gloria; his daughter; two granddaughters; and his great granddaughter.