Barbarino, Epstein and Horshack were "Sweathogs" on which 1970s sitcom?

Circus performers often do crazy balancing stunts on which one-wheeled vehicle? Automotive icons were built into the design of which Manhattan tower, briefly the world's tallest building? Malpeque Bay oysters are a delicacy from which small Canadian island province? Which word can mean a bit of chaff in grass cut for fodder or an unsophisticated rural person? Baseball's Ichiro might know that which motorcycle maker's B-King is the rowdy alter ego of its Hayabusa? Which Soviet leader, who added the post of premier in 1958, had denounced Stalin in a 1956 "Secret Speech"? Before becoming music director of the New York Philharmonic in 1958, which conductor led the New York City Symphony in… Before heading a "Dynasty," which actor played professor Mike Endicott on "To Rome with Love"?