If you were to roll back time, to which era would you roll it back to?

Good question. The short answer is that I wouldn't - I'm reasonably satisfied that one era is as good as another, thus a rollback would only deprive me of my own chronological authenticity.

If, for whatever reason, I did backtrack, then assuming it were possible to do so safely AND return to the present intact, I would love to see the birth of the universe - if such a singular, defining moment ever occurred.

If not, then I'd want to do one of the following: a) pan forward to the moment at which a quantifiable explanation for material existence is discovered*; or, b) fast-forward to the end of time*; or, c) rewind as far as possible.

* That is, if forward time-travel were possible, and/or that time is finite.

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What was your favorite toy to play with as a child?

Lego! Having the freedom to imagine and build one's own toys is the best preoccupation a kid can have.

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Would you rather be a zombie or a mummy?

Mummy; dry rot sounds much more appealing than the zombie variety.

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If you could ask Barack Obama one question what would it be?

"Can you get me a seat on the space shuttle?"

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Would you rather vacation at the beach or in the mountains?

Depends on which beach or mountains and my mood. Ideally I'd choose a beach *on* a mountain.

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What was your favorite TV show as a child?

Tom Baker-era Doctor Who. It was like the Sesame Street for Star Wars kids.

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If you could ask Barack Obama one question what would it be?

"Can you get me a seat on the space shuttle?"

Go on, ask another - I dare you.