Check out Cold Stone Creamery Flavor filled chocolates! There were about 8 boxes of "Chocolate Devotion & Our Strawberry Blonde" and just one box left of "Birthday Cake Remix". Actually, I didn't even notice that the one box was half and half. Now this is the first time that I've ever seen these, but according to the press release, they were announced two years ago (Nov '08). They mention that these are technically available year round and can also be found in the flavors "Coffee Lovers Only", "Chocolate Devotion", and "Peanut Butter Cup Perfection".
Oh geez, they are also available as a Valentine's Gift Box. Wow, they are even available as candy bars. You can see all that is available here. There's no reviews for the chocolate on amazon, but if you've had these, please let us all know how they are (and if you work for cold stone or turin, feel free to send over some samples!)
Note: If you go to Turin's website (they are out of Mexico), you can see ice cream truffle collection sans Cold Stone branding. Not picking, I just always get a kick out of that stuff.