Haha, it's only got PC speaker sound, but yeah, I just got Wolf 3D running on the ATVGA too. Pretty much full speed, and even the joystick worked, although it looks like only two buttons can be mapped in Mess. I also ran the first episode of Commander Keen, and it ran perfectly, again with joystick controls and PC speaker sound.

And man, while console emulation makes you feel nostalgic, PC emulation makes it feel like you have an actual time machine. Keep up the stellar work, folks.