Good Riddles

Question: I can distract you and I can hurt you. You always check me out regularly. What am I?

Question: This sentence is false.

Is the preceding sentence true or false?

Question: Having some, you want more. But when you have too much of it you feel bored. Everyone people wants it, and some have to much of it. What is it?

Question: I was the first and now I am the one.

What am I?

Question: People look at me all the time. I have a large vocabulary. I can teach people a lot of new things. I can be mysterious, funny, adventurous, romantic, scary, and sad. I tell stories. I can take people to other worlds. What am I?