Best known as public television's Star Hustler and Star Gazer, host of the 5-minute show that would usually run just before many PBS stations would sign off for the night. I hadn't watched the show regularly in years, but he was always entertaining and informative to me, and he clearly loved what he was doing. Rest in peace and keep looking up.
I'll never forget this story about Horkheimer - I felt bad for the dude, but it was just too funny:
Originally posted by the Orlando Sentinel Archives (articles.orlandosentinel.com)'Looking Up' Gets Star Hustler Injured By SETH BORENSTEIN, of the Sentinel staff | January 11, 1995
Jack ''Star Hustler'' Horkheimer, Public Television's astronomy show host, usually signs off his five-minute program with the words: ''Keep looking up.'' But the director of the Miami Space Transit Planetarium found how painful his advice could be.At 12:30 a.m. Christmas Day, Horkheimer stepped out to mail a late Christmas card when he saw a brilliant star, Canopus, and a bright Mars. Naturally, the astronomer kept watching the heavens as he walked toward the mailbox.Big mistake. He stepped into a 6-inch-high wooden deck, broke four toes in his left foot and pulled ligaments in his right.