Maybe Toumai (or the first known skull of Sahelanthropus, if you like) doesn't represent a true human ancestor, but this documentary is still pretty interesting. Called Pre-Human: Riddle of the Toumai Skull, I missed it when it originally aired, but thankfully the glory of the inter-tubes has allowed me to see it.
The most curious thing about this particular show is that Toumai narrates its own story, and in a British accent no less! What do you think of this sort of narrative style?;
A British accent! But it was discovered by a French team...