well there is the very, very, very, very, very, very, very early UAEPPC for the mac.
(it's not official yet, and probably will be kept so until some issues is worked out.) but will allow you to run any ppc amiga program on the mac including warpup, powerup, morpos and pos programs and will probably run OS 4.x-5.x when it's released.
actually calling it UAE is probably wrong :-D
