I am at the movie theatre and I paid a $10 ticket with a $20. I guess the guy at the register thought is was a $100 so... ya, you know the rest. I know have $90 in my pocket and instead of watching the movie I cannot stop thinking about it. I've just been thinking about both sides: how the cashier deserves it because he wasn't doing his job, or because its the right thing to do. What do you think?! I need the money but it's the guilt, I just don't know. Please help me.....