Different Strokes. Eight seasons of this sitcom, starting in 1978, starred Gary Coleman as Arnold Jackson and Todd Bridges as Willis Jackson, his older brother. These two brothers who come from Harlem are adopted by their deceased mother’s employer and move into his penthouse in Manhattan. A fun comedy where you can catch Gary Coleman say “Whatcha talkin’ ’bout, Willis?”
The "Penthouse" was located on 900 Park Avenue.

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