Antibodies was a really cool song to have in Rock Band 3. After listening to it and playing it a few times, it inspired me to check out more of their music. I listened to the whole Poni Hoax album and I must say, the material on it is pretty catchy and unique.
Since Poni Hoax is an indie band, I doubt we'll get more of them as mainstream Rock Band DLC. But, they could always happen in the Rock Band Network (but in that case, I wouldn't be able to buy any songs from them, since I have a Wii, but it would still be cool). What do you think of Poni Hoax?