Ron Palillo, best known for his portrayal of Horshack on 'Welcome Back, Kotter' has died.

He was 63.

Ron Palillo - Horshack
loading...

TMZ reports the actor died early this morning of a heart attack.

He was reportedly a heavy smoker, but otherwise seemed in good health.

Robert Hegyes, the Kotter co-star who played Epstein, died earlier this year, also of a heart attack.

Though the show aired before my time, I used to watch re-runs on late night TV.

Horshack was best known for this:

Let's also take a moment to remember his stint on Celebrity Boxing, where he battled Dustin Diamond (aka Screech from 'Saved by the Bell').

Amazing.

Did you watch 'Welcome Back, Kotter'?

More From 94.3 The Point