Anyone who chose anything other than teleportation is a fool! Let me explain...

Flying: you can only fly so fast, and you can't get into places that are inaccessible, as I could. You also couldn't fly in space, whereas I could teleport anywhere in the universe.

Super Strength: great, you're normal in every other way, but you can lift really heavy things. So what? This has to be coupled with another superpower to be truly effective.

Time Travel: there are far too many temporal and ethical problems to deal with, and assuming there's only one path of time, you have to be exceedingly careful of what you do when you travel into the past because of the Butterfly Effect. Further, if there are multiple/infinite streams of time, there's great potential to get lost, or have any alterna-time activities rendered completely pointless when you return to your home timestream.

X-Ray Vision: again, another almost useless skill when uncoupled with another superpower, unless you're a doctor too cheap to pay for an X-Ray machine.

So, you can see, teleportation has all the advantages of flight, but is instantaneous, and the power most easily used to ones own gain, as aptly demonstrated in the film "Jumper."

Time travel would be an AWFUL superpower to have. Just watch the "Butterfly Effect".

According to relativity theory, faster-than-light teleportation results in time travel into the past.

Time travel into the past (if it's even possible to begin with) needn't be so terrible. There's lots of speculation on how it might alter something going on in the traveler's past, but a) it might not work that way, we don't really know; b) even if it does the changes might be for the better, too.

I would want the ability to stop time. Not time travel just the ability to walk around and affect things with the world unable to move or see me.

Teleportation would be awesome. Save me so much time in my commute and I wouldn't have to pay for overpriced flights anymore!

Teleportaiton: No TSA!

Of that list, teleportation, hands down. Had mind-reading been included I would have had to think a little more.

I'd take the the ability that allows me to not need sleep.

the ability to make an electrical socket appear anywhere at will. that will teach you little buggers to respect "adult swim."

Energy Blast should have been an option.

It seems to me that these powers would eventually make you the target of undue attention. I would settle for something more modest, like always having exact change.

Time travel and teleportation should be the same superpower since there is only one space-time.