Do you time travel, too?

I've been time traveling this week, and it's been a hell of a ride! I blipped from 1910 to the end of the Universe with the Doctor and hung around the Regency with Miss Austen Regrets. Then I experienced the 21st century atop a time rift with Torchwood.

Most of my stories are contemporary with a paranormal element or two thrown in: werewolves, witches, telekinesis, telepathy. But I must admit I had fun writing The Men on Mars. It was completely out of my element--a futuristic set on Mars and the Moon. It took me back to the first time I saw Star Wars and to this paper I wrote in the second grade on flying cars and to my science fair project: The House of the Future. It's fun to think of new technology and new governments. Or blend in the old.

I actually started writing The Men on Mars after a Firefly marathon.

Another element of time travel, though, is the fish out of water. Whether you travel forward or back--what will be different? What will remain the same, timeless? And how would you cope with those differences? I was once working on a story where a Regency man comes to the present time. What would he make of TV? How would he rationalize it to himself? What would he make of our toilets and dish washers?

You can tell I'm a writer when I go off on a tangeant of What Ifs.

So tell me, do you time travel? Or do you like to keep your feet grounded in the 21st century? And if you do venture forth to other decades or centuries, which are your favorites?