http://us.playstation.com/psn/events/ema...FERVIDEOUL
So SIGN IN with your US PSN Account, wait 24-72 hours, and you'll get an E-Mail with a Voucher Code of $5.99,
Supposed to be used on their Video Unlimited service, but since PSN Wallet and Video/Music Unlimited services
share the same Wallet, you can use it on PSN Store as well. It won't work on newly created accounts though.