The Many Faces of Nathan Fillion

One of our favorite things about Castle star Nathan Fillion is his face. OK, fine, who are we kidding? It's our absolute favorite thing.

His adorable boyish features mixed with his incredible comedic timing make it quite the unstoppable force of nature.

As an ode to the many lovable faces of Nathan Fillion, we present to you his cutest, funniest, and most bizarre expressions. If this gallery doesn't put a smile on your face, we give up!