Name that OLD tv show...okay?

Ok there are six different shows here..i don't know all six..but i will give it my best shot...i starred this question btw..found it very thought provoking, yet entertaining...1. is Three's Company...2. don't know? 3. twilight zone...4. don't know? 5. don't know? 6. Superman, not sure there either...perhaps greatest american hero?