From Mr. Peepers to Mr. Cooper, classrooms and comedy comprise a favorite TV pairing, but no show combined the two with its era better than Welcome Back, Kotter. From floppy hats and bell-bottoms to the slightly stoned-out look on the students' faces, Kotter became the 1970s for most kids. Products such as lunch boxes, board games and dolls (including a perfectly coifed John Travolta) solidified the iconic stature of the series and its cast. Ron Palillo, who played lovable schnook Horshack, took some time to raise his hand (with a quick, "Ooh-ooh-ooh!") and answer a few questions about Kotter's new Season 1 DVD (available now;
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