A friendly reminder for PlayStation 3 owners: major maintenance is ongoing for PlayStation Network today, putting the various services offline for a good 16 hours, from 10am to 2am CST.
During this time the PlayStation Network Store and in-game purchases will be unavailable, as will account management. However, if you're signed in beforehand, you'll still be able to play games, and if you've signed in within a few days beforehand, signing in again shouldn't be an issue, though your access to some services will be limited.
If you are out of luck, I humbly suggest playing video games on your computer box today. Yes, it can do that too.