Along with her brother Seth, Rachael MacFarlane is an OG to the American Dad franchise, since she's lended her voice as Hayley Smith since the show's first episode in 2005.

"It was crazy the way everything happened with 'American Dad!' The fact that 'Family Guy' was canceled and 'American Dad' was created. Still, all of us pinch ourselves that we've been lucky enough to be on this ride for almost two decades. Seth [has] always put out really amazing funny, great content. It just amazes me this many years later that the writers are still able to create such fresh, funny material for these same five characters that they've been writing for so long," MacFarlane said.

With the show now in its 17th season, Dee Bradley Baker is teasing the Smith family's latest adventures.

"It's definitely as good as it's ever been and anyone who's new to it will be delighted... as well as anyone who's been watching it all along."

American Dad! airs Monday nights on TBS.