I know the connection, I think... and have answers for these only, so no entering contest for me...
1         Who first appeared in the film "Steamboat Willie"?
2         By what name is Norma Jean Baker better remembered?
3         What was John Wayne's original name?
4         Which greyhound from Ireland
6         Which is the highest peak on the N.American continent?9         Which character was central to 3 post apocalyptic film set in Australia?
and
17       What name is often given to the appearance of the shadows cast by major craters on Earth's satellite?