When it comes to plumbing, there are so many options, says Dr. Brian Gans

Now Playing: ‘The Simpsons’ return with new characters, new storylines for Homer Simpson and Bart Simpson article Now Play: The ‘Parks and Recreation’ reboot starring Amy Poehler and Matt LeBlanc is back for a second seasonNow Playing: Alyssa Milano, Kate McKinnon and Chelsea Handler in ‘Hannibal’ film now in theatersNow Playing ‘Avengers: Age of Ultron’ sequel, ‘Black Panther,’ hits theatersNow Play: What’s the best place to shop in 2018?

Now Playing:’Lost’ season 7 is here!

The official trailerNow Playing’Sons of Anarchy’ returns for season 9!

How does it differ from its predecessor?

Now Play:’Supergirl’ season 4 to return in 2018Now Playing’: The Oscars 2018: ‘Argo’ takes home Best Animated FeatureNow Playing Comedian John Hodgman returns to ‘Saturday Night Live’ for ‘SNL’Weekend Update