I've mentioned that Mario in his pre-Mario Bros. days was real fragile. If he fell from much further than he'd fall at the apex of his jump, he's dead, which always seemed harsh to me.

But take this screen from the Donkey Kong arcade game:

You'll notice that there are these two elevators, one going up and one going down

While you're waiting for one to take you to the level you want to go, you might decide that you're bored and play with the buttons to kill time. But, hit the jump button when you're riding the Down elevator...

Suddenly the laws of physics go out the window and Mario jumps his normal height while the floor plummets away from him.

Yep, that means that he's fallen too far and buys himself a new farm.

So, I wouldn't recommend it.

You know Donkey Kong the game right? Rescue the girl from the gorilla at the top of a series of construction sites, yeah? The thing is, though, Jumpman (later known as Mario) is extremely fragile. If he falls more than a few inches, it's instadeath for him, so you probably don't just jump off of girders willy-nilly.

Even though you totally can.

The edges of the screen are distinct boundaries. If you hit one while on the ground, nothing especially exciting happens, but if you hit one while jumping, you kind of bounce off of it and fly back the other direction. I pretty much only use this tip to grab the hammer on the left side of the final board.

It's not really that useful of a tip, I know, but it is showy. And you can't be Pro without being a little bit of a showoff, it's just too much fun.