Ben Affleck [1] sat down with Ellen DeGeneres [2] on Tuesday morning to discuss everything from brother Casey Affleck [3]'s Golden Globe win to his adorable family. The Live by Night [4] actor described how excited his 4-year-old son, Samuel, was about seeing his uncle take home a trophy and also reflected on the incredible moment 20 years ago when he himself was the award season darling for his work on Good Will Hunting with BFF Matt Damon [5]. The proud brother also revealed that he took his kids, as well as Casey and Matt's kids, for a fun skiing trip over the holidays. The only problem? His kids — Seraphina, Violet, and Samuel — are a little bit of a handful. "[They] have the world's greatest mom," he said of estranged wife Jennifer Garner [6]. "But even she cannot conquer the obstacles there."