"David Tennant (Harry Potter movies) emerges as the regenerated Doctor Who in the second season of this updated sci-fi classic. In this new season catch the Doctor and Rose (Billie Piper) as they battle a cadre of cybermen, take on an army of ghosts and visit “the new Earth,” among many other out-of-this-world adventures." -- iTunes Store
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When the Tardis lands in 2012, the Doctor plans to show Rose the London Olympics.
the fine print: Downloads posted on the Free iTunes Downloads blog are usually free for ~1 week. After that, you'll have to pay for them.