Now that the Doctor Who special "The Waters of Mars" has aired, we head towards the annual Christmas special and the regeneration. While The Doctor regenerating is part of the lore of Doctor Who, before it was done with little notice. We found out earlier this year about Tennant leaving the series after a few specials, so this time around the process is different. We have seen pictures of the new Doctor (Matt Smith), while still watching David Tennant in the specials. Easy with the long notice, yet also difficult because of the long goodbye (no complaints about that). I will be sad to see Tennant leave. His enthusiasm and love of the series has helped it along these past three seasons. But eventually the torch has to be passed, and thankfully, I think it is being left is capable hands.