I can keep you grounded, or I can rile you up.
I can facilitate your travel, or I can discourage you from going.
I have assumed many forms including that of a cyborg, a professor, and a statue.
What am I?
Hint:
As long as people desire entertainment, my forms are seemingly endless.
Hint #2:
Two of my other notable forms are a schizophrenic mind, and a sled.
Hint #3:
The forms I have explicitly mentioned are, essentially, intangible. Some of the clues in the main body of puzzle point toward tangible items.
Hint #4:
The wordplay here is playing with multiple definitions. The “forms” apply to only one of these definitions.