Loki: I have been falling for 30 minutes!
Grandmaster: Revolution? How did this happen?
Topaz: Don't know. But the arena's mainframe for the Obedience Disks have been deactivated and the slaves have armed themselves.
Grandmaster: Ooh, ah, I don't like that word.
Topaz: Which? Mainframe?
Grandmaster: No. Why would I not like mainframe? No, the "S" word, the "S" word.
Topaz: Sorry, the prisoners with jobs have armed themselves.
Grandmaster: [Smiles] OK, that's better.
Thor: A creepy old man cut my hair off.
Grandmaster: I love when you come to visit, 142. You bring me the best stuff. Whenever we get to talking, Topaz, about Scrapper 142, what do I always say? "She is the..." and it starts with a "B."
Topaz: Trash.
Grandmaster: No, not trash. Were you waiting just to call her that? It doesn't start with a "B."
Topaz: Booze hag.
Thor: She's too powerful. I have no hammer.
Odin: What are you? Thor, god of hammers?
Thor: There was one time my brother transformed himself into a snake because he knows how much I like snakes, and so I picked the snake up to admire it, but then he turned back and went "aahh! It's me!" And then he stabbed me.
Odin: Even with two eyes, you only see half of the picture.
Bruce Banner: Last time we saw you, you were trying to kill everyone. What are you up to these days?
Loki: It varies from moment to moment.
Thor: How did you end up here?
Korg: Well, I tried to start a revolution, but didn't print enough pamphlets so hardly anyone turned up. Except for my mum and her boyfriend, who I hate. As punishment, I was forced to be in here and become a gladiator. Bit of a promotional disaster that one, but I'm actually organizing another revolution. I don't know if you'd be interested in something like that?
Answer: If other people are worthy, they can gain the power of Thor (this is something that has happened in the comics), but Thor can muster that power alone. In his case, the hammer simply allows him to focus his powers.
How come then that in the first movie when Odin wants to remove Thor's power he "confiscates" Mjolnir? If Thor's power is intrinsically inside him, how could Odin remove it? Then, he reacquire those powers only after holding Mjolnir again, which implies Thor's powers come from Mjolnir. This is poorly explained in the movies.
Epigenis
"Poorly explained" doesn't make it a mistake. Odin suppressed Thor's innate powers and removed the hammer both symbolically and to prevent Thor from using it to reacquire his powers.