1 Many people believe that she is among the top ten dancers of all times.
2 Many people believe that she is among the top ten dancers of all time.
3 I think it's the greatest song of all times.
4 I think it's the greatest song of all time.
Are these ever possible?
5 I think it's the greatest song of all the times.
6 I think it's the greatest song of all the time.