Misc: What game show had Dr Joyce Brothers as a panelist from 1978 to 1980?

Questions

who assassinated john lennon?

who did a version of 'one bourbon, one scotch, one beer' on his 1977 debut album?

who began his career with 'the yardbirds' and is established as one of the best rock guitarists of his generation?

who began his professional career with black sabbath?

who sang for 'bad company' and 'the firm', then went out on his own?