I ran across these links to some neat Roman centaurs... they're not Greek, of course, but the concept should translate fairly well, I think:

http://www.hourofwolves.org/?view=armies&which=marianRome&pic=22

http://edmontonwargamer.blogspot.com/2010/07/28mm-roman-centaurs.html

Perhaps this will inspire some folks here if they decide to convert some Olympus centaurs!

-Alex

The Hour of Wolves conversion was the better of the two. Going to make some yourself Alex?

I agree, the first one I linked to is the better of the two.

Someone here made some awesome Spartan centaur conversions awhile back, and I really liked the look of them. I might build one as an experiment.

-Alex