Thanks a Million

Jennifer Lopez starts the chain of kindness by celebrating an inspiring young fan and her mother.

Nick Jonas surprises longtime fan and mental health awareness advocate Carla, who in turn repays the kindness with a visit to her old high school drama teacher.

Before he lit up the NFL, Aaron Rodgers had a mentor who helped him believe he could get there. Now hes ready to return the favor.

Tracy Morgan overwhelms an inspiring gym owner. Later, this community leader gets to pay it forward with an old friend.

Karlie Kloss surprises a former student of her Kode With Klossy camp. And this proud pupil has another mentor shed like to thank.