The yogi was 91.
It is easy for us to laugh at the man and his teachings (levitation? come on), but without him (and those four lightning conductors), the two worlds - East and West - would not have come closer to one another. One could say that America's present-day interest in Yoga, meditation, Eastern religions and alternative systems of medicine would not have happened without the Maharishi.
I will argue that without him, "White Album" wouldn't have happened. And Paul wouldn't have flown back early to London. And George and John wouldn't have stayed back in India. And the Beatles wouldn't have broken up. And David Lynch wouldn't have made his films. And I should stop now.
Whether or not he "made a fool of everyone", the man from Jabalpur leaves behind quite a legacy.
If you want to see some really cool pictures of the Beatles in Rishikesh, you will want to check out this site: The Beatles in Rishikesh (the photo galleries are on the top left-hand corner of the page)