Tsubasa Reservoire Chronicles. They also mention on the FUNi blog that new designs will be added over time, so don't be heartbroken if you don't see you favorite show represented here just yet.
It's also cool that you can get something like this to feed your anime habit even if you are under the age of 18 (they are available for ages 13-17 with parental permission). It's only open to the US and Canada right now, though, so you may have to be patient if you live outside of those areas.
Head here to sign up for updates on the cards and be notified once they become available. I don't know about you, but I want that Sgt. Frog card! Which would you choose?