It would be really salty kool aid

Kool aid is a drink, it can be grape, cherry, or other stuff.

Cut off the tips of baby fingers and see if they actually do grow back

Genetic and physiological modification. I want bird wings and gills dammit, and lacking that, Ultraviolet vision and the ability to jump 20 feet into the sky.

i would see how many body parts (one at a time of course) that i could get replaced with a robot version, first: robot arms, then robot legs, robot (u know,,,) up until i'm basically robocop

I would want to see how much strees people could take, physical or emotional.

I've been doing that on me this whole time ...

I would have one person kill multiple people and take a psych eval each one to see if they become a psychopath after an estimated amount. After that, I would kill them.
Secondly, I would love to experiment with isolation-related insanity. Us humans are social, but we cannot handle being completely alone. I would take a person, place them in the Amazonian Forest(or other secluded place), and give them supplies for two years. After two years, I would return and place them back into society as if nothing happened. For two years after that, I would observe them and see whether they return fully to their societal duties.
Thirdly, I would see the limits of adrenaline. I would hook someone up to a machine and stab them until their adrenaline kicks in, clean up the wound, and repeat until the adrenaline or the stab wounds kill them.
Finally, I will test limits of the psyche. I will take someone off the streets and present to them images of unspeakable horror for 1 minute and psych test

them until they are broken

I want to see how much it takes for someone to crack. Also, I want to extend the lifespan and see how much time it takes to crack.

How much crime would fall if for their crimes, people were subjected to a similar action.

Like an eye-for-an-eye thing?

Yeh. Like beating those four idiots who tormented that kid live on the Facebook.

Isn't the reason dinosaurs haven't been brought back from DNA because of ethics and funds? That would be fun.

Ok this wasn't a contest but dinosaurs wins. We could take literally every experiment posted here, add dinosaurs, and it would be 5000x better.

Only organisms half a millions years ago can be brought back.

We could take testing explosions in the twin towers and add dinosaurs to make it better?

Yes, imagine dinosaurs in tiny hard hats setting off the explosives. Or see if a dinosaur could do as much damage as a plane/controlled demolition. Is that not better?

The Japanese already do that. They call it Godzilla.

I had an idea to put people high on lsd into sensory deprivation tanks