Serena Williams plans to make a movie about tennis legend Althea Gibson. Gibson's life story is remarkable and should make for a great feature film. There's no way that Serena could play her, however - Williams would have to lose about 50 pounds of muscle before she could pass for Gibson.
Thankfully, Serena appears to realize this herself, and says she will only develop the script and attach her name as producer.
I like Serena a lot, so: you go, girl.