What's the best credit card out there that gives you free miles to fly and free hotel?

What's the best credit card out there that gives you free miles to fly and free hotel?

What's the best credit card out there that gives you free miles to fly and free hotel? I have so many freaking credit cards that I don't even use. I always said I wanted to get that free sky mile thing, but never came around to it. Now it's Sunday and I am booooooored. I would definitely want to get one of these kinds of cards. I'd use it all the time. How do you retrieve your rewards? TIA