(Image credit: Apartment Therapy )

We have absolutely no idea how we came upon Evil Mad Scientist Laboratories, but their cure for crooked picture frames is quick and easy.

Rubber feet. Like these, which are just $1.99 at BGMicro.

(Image credit: Apartment Therapy )

Just stick 'em on the back of the frame, in each of the lower corners.

We'll try it out and let you know if it works.