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Yes, and the short special for "Children in Need" when Tennant's Doctor and Davison's Doctor met was terribly fun, and a good example of what can be done with the "more than one Doctor" theme. Now if someone could write a DECENT multiple Doctor storyline! Can you imagine all the newbies teamed with, say, Davison -- or Baker? He's bizarre enough he might actually do it. Hard to write one of those without getting cheesy though.
John Sim's master was...well...masterful! Reminded me a great deal of the original Roger Delgado character: sly, brilliant, more than a little insane. Now...resurrect Romana! Sure, she'd have stayed on Gallifrey, fought in the Time War, been killed along with the rest...unless someone else forced her into doing the "turning human" trick as the Doctor and the Master willingly did. A New Romana meeting the new Doctor, and perhaps having her memory jarred...wouldn't that be fun?
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