If I was certain I was the only one: I’d find a way to get into the FBI, Pentagon, White House, etc, and read all sorts of files that otherwise only the Really Important People ever get access to. Just because I could.
How would you guys get around, all of you with your extravagant vacation plans? The OP specified: “Let’s say it was a very efficient bomb or virus, too. That means no bodies lying around rotting, just empty cars, empty houses, empty cities, etc.” I would assume that means streets and highways would be littered with empty cars (if not horrible accidents), prohibiting most transportation around them. You’d need either a horse or a motorcycle to get around. And forget about traveling abroad, unless you can steer a ship or fly a plane by yourself, with nobody in a control tower talking you through a landing.
You could live forever on stores of prepared, preservative-filled food, but I’d do whatever I could to ensure the power stayed on as long as possible. Then I’d teach myself how to ride a motorcycle, but mostly I’d just get used to walking. I’d take care of my health as best I could, because if I got injured, I’d be S.O.L. without doctors or hospitals. Other than that, a lot of reading and masturbating sounds like a plan, and I’d add to that listening and playing music, and keeping a journal of my thoughts to pass the time.
Good idea, especially with all the dentists gone.
I’d catch up on my reading, get a gas generator, take frequent road trips, acquire a trusty companion dog, explore a bunch of houses and buildings I’ve never been in, masturbate outside because I could, never wear clothes in the summer, and spend a lot of time at the lake, get wasted every time I got bored, find a sex doll, and a lot of other random things.
Well, of course you’re right about the empty vehicles, but Corporate Hippie DID say “No property has been damaged whatsoever.” So, my take was that there wouldn’t be any massive pileups blocking the roads…unless the virus/bomb event ocurred, say, right at peak commute time.
Guess it all depends on how you interpret the situation he’s set up for us. I still want to go for that road trip 
.
I’d break into every mall, jewelry and fancy clothing store and walk around in full formal wear in cold weather, and wear nothing but fancy lingerie when it’s too hot.
Me too, in something big and comfortable, maybe a motor-home towing a hybrid or a motorbike. Back roads should be fairly clear, so as long as we stayed out of the cities, we should be able to navigate fine, at least for awhile.
Why did I say “we”? Hmmm. It’s hard to get your head around being the only one left alive.
I love to look around in other people’s houses, so I’d do that too.
If you happen to be in the Eurasasian continent, you will have lots of opportunities. YOu can go from Korea to China to Europe and even explore the Scandinavian peninsula if you take the route via northern Finland.
I have always, always, wanted to be able to roam around in deserted homes. I suppose that when you’ve seen two thousand homes, you’ve seen them all. But it would still be an interesting thing to keep doing for the rest of your life.
Of course, I’m not sure how long I could go on. Loneliness would be dire. What’s the point of magic if you can’t share it with anyone?
I’d find a really great cathedral and turn it into my home. I’d set up trapezes and a big movie screen. And I’d make sure to be near a great library and lots of food sources (yes, the ice cream theme again). I’d try to teach myself to fly a helicopter. The at some point when I got tired of that I’d move someplace warm (where there’s a lot of ice cream) and swim a lot.
Maybe we should put together a worldwide vote right now for the best meeting place, just in case this does happen and we can find the other six or seven survivors.
How would you be sure that there aren’t other survivors, I’d try to find other survivors. Each city I go to, I’d put up a huge sign saying which city I was going to next. Then, when I got to a place I wanted to stay, people would eventually find me.
You could always just keep posting here and you’d know when you got a reply.
Honestly? After taking care of the basic need for food and narcotics, I would secure some heavy-duty doorbreaking and lock-picking stuff, and set out to uncover all the things we’re kept from knowing. The Pentagon, Mason’s lodges, Neverland Ranch, Scientology headquarters, Area 51, high-school girls’ diaries…
I was considering simply going mad, but then after reading some of the other suggestions, after the first few months of wild abandon, I think I’d eventually:
Walk to Tierra del Fuego.
Turn around.
Walk to Alaska.
Pilot some sort of boat across the Bering Straits.
Walk some more.
I’d explore all sorts of things I’d only heard of. I’d leave giant grafitti wherever I went. Brain Wreck’s idea of revealing all the Top Secret areas is good, too.
And I’d keep a diary, with pictures, for the benefit of any aliens that might happen along later.
Meeting place? In the shade of the Great Pyramid. If I get there first, I’ll build an oasis using water from the Nile. 
Well my thread got to page 2, so I guess I’ll chime in with some of my ideas.
First thing I’d do is secure food and shelter and all that boring crap…
Then I’d hop onto a computer and see if the internet was still there. If it was, I’d go liberate some server racks from a computer store, put together a blazing fast machine with terabytes of storage capacity, and fiendishly download local copies of all of my favorite sites. The straightdope.com and wikipedia.org come to mind.
If that failed, and it probably would, I’d find a military base and try driving an M1A1 Abrams tank. If I could get the hang of it, I’d spray paint it psychadelic colors, mount a big beach umbrella and lawn chair on top, and outfit it with a top of the line sound system with huge exterior speakers. Then I’d cruise around America living out of my tank. I don’t think the empty cars on the roads would present much of a problem, either. 
It’d also be fun to start an empty car, put a brick on the accelerator, tie off the wheel so it keeps going in big circles, and shoot at it with my tank.
I think living with a pack of dogs would be cool too, maybe I could even rig up some step ladder thing so the dogs could easily jump on and off of my tank while I’m driving.
I also really dig the ideas people have had about exploring peoples’ houses and “top secret” government buildings.
In case everyone dissapears tomorrow, is there a handy way to turn ‘spoiled’ gasoline back into usable stuff? What about diesel? Does it keep indefinitely?
New member/occasional lurker here.
First, I’d make sure survival was ok: stockpile food, learn to hunt/fish/garden well enough to feed myself comfortably, set up home in a nearby city with plenty of now-abandoned resources.
Once survival isn’t a huge problem, I’d read up on running and maintaining all of the machinery I might use. Once I had a handle on this, I’d travel. As I journeyed around the globe, I would start documenting what happened during the apocalypse, so someday the aliens would learn our fate and learn an Important Lesson.
I’d learn how to sail or navigate some sort of powered boat, travelling across the ocean as well to visit other interesting places. I might learn to fly, but I’d be very wary about maintaining a plane by myself.
During the whole time, I’d sit around, read, watch DVDs while I can, and probably abandon my quest to document the end of the world multiple times.