I want to turn into liquid metal like the advanced prototype from T2 Judgement Day. I would never need a knife again ... or a fork or a spoon ... or anything made of metal that has no moving parts for that matter. I also think it would be cool to have a little piece of that liquid metal that I could telekinetically control and change its size. Most of the time I would make it a little sphere or cube that would levitate above my hand until I needed it either for self defanse or everyday use. It would be like a pocket T-1000......Awesome!