I downloaded the Baby Groot model posted by landsharkxx and wanted to remix it and see if I could make it print easier with little or no supports. (Printing with PLA and an active cooling fan.)
I took the time to adjust the areas with overhangs, thicken his thin features, and resculpt in detail and add some leafs.
I was able to put him in a pot with a print in place part that allows him to wiggle around as if he was dancing. Video here: http://youtu.be/Qk9saWm2xM0
I used Meshmixer, Sculptris, and 123D Design. Print tested on a MakerBot Replicator 2. No supports or raft needed.