If you could choose one substance to turn things into with touch...

[Saul B]

Bacon.

Cooked bacon.
Brings a new meaning to the phrase banging the bacon...... If you know what I mean...

 

[Aitruis]

the same thing it was already, but with a chocolate coating.
My meals will increase deliciousness tenfold!
<spoiler=image snip>

....Not gonna lie, that looks like someone shat on a lemon.

OT: Salt. Then I would pay a visit to overpaid celebs and CEOs, and turn their riches into salty goodness...

 

[Ocelot GT]

Stemcells, the building blocks of life.

 

[wierdman51]

Depends on whether or not I could control it.

And if we may, then i choose a choose to make them love me with it, easy chicks.

 

[Jark212]

Beautiful Women, so that beautiful women I touch will remain so...

It might be awkward If I touched my car and it turned into a 15 ft tall Beautiful Woman, awkward but highly awesome/erotic...

 

[gim73]

Energy.

Then I would touch the earth.

 

[bcponpcp27]

Anti matter. That way I don't get stuck in an Ironic hell, AND I get to take out most of the world with me!

 

[Dahaka27]

I'd like everything I touched to turn into... A better version of itself!

Then I would always be eating a better piece of cake than the one I picked up, my bacon would always be crispy, my hair would be awesome, my Ipod would upgrade itself and the people I shook hands with would stop contemplating stealing my wallet.

Also I could use it to make people better, although I'd have to make sure that they never found out it was me. Am I selfish for not wanting to share incredible healing powers 24/7 until my hands drop off?

Probably the best answer....

Kind of makes my answer sound lame.

Um

Cheese?

 

[Metric Monkey]

If I couldn't control wether or not it turns into whatever when I touch it, then it would have to be either some kind of food or water.
If I could, I'd have it be grenades.
I'd have so much fun.

 

[Griphphin]

I'll go with a cheesy version of whatever I touch. With practice, I will learn to harness this ability into different types of cheese, saving the world from a potential cheese shortage-themed apocalypse.