Misc: Which continent has the most countries?

Questions

Which eighties musician got sued by a music related company for using their name as part of his pseudonym??

Chrissie Hynde was in which early eighties group??

After The Fire made "Der Kommissar" popular, but which eighties musician performed it originally??

What show was "Whatcha talkin' 'bout Willis?" a standard catch phrase??

Which sitcom helped launch Michael J. Fox's career by portraying him as a money-grubbing teenager??