Antialias and wireframe

I've tried forcing it, allowing the application to control it, etc. It's never worked. :/

Edit: Uh... of all the peculiar things that could have happened, anti-aliasing all of a sudden works. Specifically, Quincunx anti-aliasing. Anyhow, this is confusing the heck out of me- hoping someone has an idea as to why this works besides that my computer is blessed. 0_o