Ha! I actually find that to be clever. The bmp contents might be trivial but I can safely say I've never seen that before. I can imagine awesome extensions to that. Like obfuscated code inside of a more elaborate, even colorful bmp. A png or jpeg would be fabulous at that.
Seems to me that finding code whose bytes also rendered a nontrivial image, or making and image that incidentally yielded nontrivial code would be tantamount to a very hard fixed point problem...