Have you seen Clone Wars chapter 21? Its soooooo cool. Here's a quick layout of what happens: A successful campaign on Muunilinst draws to a close, and Master and Padawan are reunited. Meanwhile, on the distant planet of Hypori, a band of Jedi Knights faces a mysterious and powerful enemy, General Grievous, Supreme Commander of the Separatist forces.
In one part, Grievous grabs a Jedi by the neck and smashes his head into the ground.