GM has changed the name of The Baboon Heart — opening Feb. 12 with Christian Slater and Marisa Tomei — to Untamed Heart. ”People (might think) Baboon Heart is about a transplant,” says MGM VP Greg Foster. Instead, it involves a guy (Slater) raised by nuns who told him his weak ticker was a baboon’s heart. It has nothing to do with surgery. ”(The old title) would have created the wrong impression,” Foster says.