Pamela Adlon Corey Nickols/Getty Images Share on Facebook Share on X Share to Flipboard Send an Email Show additional share options Share on LinkedIn Share on Pinterest Share on Reddit Share on Tumblr Share on Whats App Print the Article Post a Comment Logo text ABC's Shifting Gears will celebrate the holidays with Better Things creator and star Pamela Adlon. The Tim Allen-led comedy has cast Adlon in a guest role as Gabriel's (Seann William Scott) opinionated single mother. The episode is scheduled to air Dec. 10.