What is this???
 

[IMG]http://i15.tinypic.com/6sjv9n8.jpg[/IMG]

Maze Brain

Yes, looks like an Oulophyllia to me.

Oulophyllia crispa

Judging from the hand in the background, I think the polyps are too small, too convoluted, and too angular to be Oulophyllia. My thought would be either Goniastrea or Platygyra.

I second Goniastrea.

OK, yes -- Gonastrea. Not Platygyra, for sure, since the corallite walls are too sloped (more vertical in Platygyra).

Platygyra--
heres the aims pic:
[img]http://www2.aims.gov.au/coralsearch/images/701-800/Large/752-03.jpg[/img]
here the OP's
[img]http://i15.tinypic.com/6sjv9n8.jpg[/img]

here is the goniastrea favulus -- the closest goni sp. IMO.
[img]http://www2.aims.gov.au/coralsearch/images/101-200/Large/190-03.jpg[/img]

Sigh...the trials and tribulations of amateur taxonomy..I'm going to keep reading...

Goniastrea australiensis, I would bet. Here is a pic from aims:

[img]http://www2.aims.gov.au/coralsearch/images/101-200/Large/188-06.jpg[/img]

and here is one I got last summer in an aussie shipment listed as such.

[img]http://www.edensgatecorals.com/australian/pinkgoniastrea.jpg[/img]

I put a vote in for O. Crispa.

Rather an insane price it is currently going for IMO.