Can someone clarify something for me?

[searching4j]

Hi,
First time poster here, so please excuse me if this is posted in the wrong forum. I recently purchased a 46" Sharp Aquos, 1080p... came with a free Sharp BD player... bought HDMI cables and the complete package (or so i thought).

I was inspired to finally buy an LCD after seeing Iron Man at a relative's house, where the picture was unbelievable. I'm unsure if the proper term would be 3-D, but the it seemed as though it was sharper and clearer than anything that i'd ever seen. Now, mind you, i had seen a blu-ray movie play before, but this was unreal. Again, unlike anything that i had ever seen. Needless to say, I've bought a few Blu-Ray movies and none of them have come close to looking like what i saw that night at my relative's house. The clarity is there, the sharpness is there, but that "brilliance" (i'll call it) isn't quite there. My question to you is, am i missing something? Is there some setting that i may have overlooked? is that 3-D effect limited to certain movies? I've come to the conclusion that it may be due to the fact that my TV is of the 24hz variety and not of the 120hz variety that i know is also available for purchase these days. sorry for the long-winded questions. Any input is greatly appreciated on the matter. Thanks in advance.