@BoneyBoy
Recently quite a few "fads" turned out to be resounding successes but hell, you could be right.
I must disagree with the cost of 3D glasses.
I paid an extra £1.50 (about US$2 give or take a few cents) to see avatar 3D and got the 3D specs.
If that is too expensive you need to ask your parents for more pocket money.