that sucks. "it takes more than going down to your local video store and renting easy rider to become a rebel." he made some damn good choices in movie roles.
Dennis could play the villlian like no other. I was amazed at the creepiness of his character Frank in Blue Velvet, one of my all time favorite Hopper films. I love the the line when Kyle McLaughlin says He'll have a Hieneken and Franks says "Hieneken, fuck that shit, Pabst Blue ribbon!!"
Rest in peace Dennis you gave us many years of enjoying your talent.