music: 70's Chart Toppers: Name The Artist: The Right Thing To Do?

Questions

who starred in 'conan the barbarian'?

who transmitted radio signals across the atlantic?

who visited australia and new zealand, then surveyed the pacific coast of north america?

on the 1976 release, who 'wanted to fly like an eagle'?

in 1958 who had a pop music hit with 'willie and the hand jive'?