Another 'Welcome Back, Kotter' Sweathog dies: Ron Palillo

"Oooh! Oooh! Oooh! Mr. Kotter! Mr. Kotter!"
"What is it Arnold?"
It was a running gag on the weekly hit series of the 1970s, "Welcome Back, Kotter." And now, the second of the four original "Sweathogs" has died.

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