Jason O'Mara, Rachel Bilson

Fox rewound the clock and thrust viewers into the prehistoric age with its sci-fi thriller Terra Nova on Monday night, while The CW debuted a kinder and less reptile-filled (except for that 'gator) drama, Hart of Dixie. We want to know what you thought of these two new shows — and what you think of every new series this season.

Vote: Which fall premieres won you over? Which flopped?

Were Terra Nova's special effects and action scenes dino-mite? Did you find Rachel Bilson's Southern-set drama charming?  Vote now! And remember to encourage your friends and other fans to vote.

Check back to see what TVGuide.com users think of your favorite — and least favorite — new shows for fall and the final rankings for the debuts.

Fall TV: Get the lowdown on this season's must-see new shows

When can you vote next? Here's a handy calendar to help you keep track.