Here's a very nice model of Einstein based on the mesh from http://www.thingiverse.com/thing:966908 I just made it easier to 3d print by fixing a few issues, decimating, reorienting and flattening the base.
It prints in about 6.5 hours with support. I used 0.2mm layer with 3 perimeters and 20% infill. For support, use 10% infill at 4mm and 54 degrees automatic. Make sure the mustache is supported. Add a few manual supports if necessary.
You can buy this already printed here.