Yar, that be a Hydnophora sp. I don't have my books near me at the moment (by which I mean I am too comfy in bed to get my arse up) so I can't give you the exact species but I can assure you it's a hydnophora. If my memory serves me correct, it's probably H. bonsai but could potentially be H. pilosa or H. excesa. Cant say without seeing the skeleton with the polyps closed.
Feed it once or twice a week and it'll grow like a bugger. It is actually an LPS even though it looks like an SPS, so think of it's care more like an LPS. Be careful not to bleach it if you've thrown it up near the top of the tank right away if your lights are brighter than your friend's lights. The coral isn't exactly known to play nice with others, so give it some space until you figure out its "personality" (whether its a bit more mellow or a total spaz that tries to kill everything nearby).
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