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Fans of This Is Us... Milo Ventimiglia turns 40 today!

Do you watch This Is Us on NBC?  If so, you probably love Jack Pearson!

Milo Ventimiglia who plays Jack turns 40 today!

This is one of the most emotional scenes from the show...

This Is Us - A Father/Son Initiation (Episode Highlight)

Jack shows Randall that he's willing to carry him through life - no matter what. Share this moment using #ThisIsUs. " Subscribe for More: http://bit.ly/NBCThisisUs " This is Us Returns Tuesday September 26 9/8c on NBC!