The new Supergirl series on CBS debuts on Monday, October 26, but some reviewers have already seen the pilot episode. Cliff Wheatley (writing for IGN) thinks the episode is a bit too formulaic (especially in terms of the villains), but he loves Melissa Benoist as Kara (Zor-El) Danvers/Supergirl.
From Cliff's review it sounds like Supergirl has lots of potential. Check out the Supergirl review below, and let me know if you'll tune in to watch the debut. Supergirl: "Pilot" Review - IGN