Celebrities At The Olympics: Jon Hamm, Will Arnett, Seth Rogen & More (PHOTOS)

Jon Hamm is at the Olympics with his girlfriend Jennifer Westfeldt and they and a few famous friends turned up at the US-Canada men's hockey game on Sunday. Rachel Bilson was there with her fiance, Hayden Christensen, who lives in Vancouver. Canadians Will Arnett and Seth Rogen also cheered their native country.

On Tuesday Hamm was spotted wearing a Canada jacket and toting several bags of swag.

PHOTOS:

• • • • • Rachel Bilson, Hayden Christensen, Jennifer Westfeldt and Jon Hamm