The 45-year-old actor and another bystander assisted the woman who fell down in his Brentwood neighborhood in Los Angeles on Saturday, according to E! News.
Dressed in gray shorts, a T-shirt and running shoes, Schreiber politely chatted with the woman, kneeling down beside her to make sure she was okay.
Aside from being helpful that day, Naomi Watts' husband tweeted a picture of one of their sons dressed as a leprechaun with the caption "Happy Saint Patrick's Day!!!"
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