I just saw a blurb about Marshawn Lynch and the press. Apparently he was fined $100,000 for not talking to the press after a game, so the next game, he just gave one word answers. Mostly "yeah." Seems like a pretty bizarre thing to fine for. And a lot to have to pay.
To put it into perspective,
here's a list of fines handed out this season.
Fighting $8k
Roughing the passer $16k
physical contact with officials $27k
But you don't promote the NFL's business by talking to some reporters in the locker room, and they fine your ass $100,000. Amazing.