This is what happens when Milo Ventimiglia bares all -- millions of people want to watch.

Milo is one of the stars of NBC's new ensemble dramedy "This Is Us," following a group of people who share the same birthday, and whose stories end up connecting in interesting ways. According to Deadline, the newly released trailer picked up almost 15 million views on Facebook in just over 48 hours. That shattered the previous record for most Facebook views of a new show during the seven days of upfront week; that record was said to be the 4.1 million for The CW's "Legends of Tomorrow," so ... well one, Milo's butt.

If you check out the Facebook trailer for "This Is Us," it's now at 18 million views (and counting):The trailer also has just over 2,635,700 views on YouTube.

Mandy Moore, Justin Hartley, Sterling K. Brown, and Chrissy Metz co-star in "This Is Us," which follows the characters as they embark on life changes at age 36. Milo and Mandy play a married couple about to have triplets, Justin plays an actor, Sterling searches for his birth father, and Chrissy's character battles an eating addiction. The trailer seems to give a lot away, but maybe not. We haven't seen the actual show yet.

What do you think? Will you be watching when this airs Tuesdays this fall?

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