For fans of the legendary BBC series, Doctor Who, whether you like the new series with Tennant and Eccleston or the classic episodes with Hartnell and Baker. This is also for the spinoffs, including Torchwood, The Sarah Jane Adventures and K9.
Of all the TLT, regeneration has gone from a hokey 60s trick to continue the series, to an amazing process. Regeneration is nothing short of casual death halted in its tracks. In another idiom this might be called the "first power".