Another "Classic" entertainer has left us prematurely.

Developing news  out of Palm Beach, Florida about 30 minutes ago, where actor Ron Palillo has died of an apparent heart attack at the age of 63.

Palillo was found unresponsive at approximately 4 a.m. by his 41 year partner, Joseph Gramm.

According to imdb.com, he caught the acting bug as a teen, then started his own summer theater, before landing one of the most recognizable shows on television, that of  "sweathog" Arnold Horshack in the long running 1970's program "Welcome Back Kotter"

The series also starred John Travolta, Robert Hegyes, Lawrence-Hilton Jacobs, and Gabe Kaplan.  Hegyes also died of a heart attack in January at the age of 60.

Here's remembering Horshack's signature line: