Sam Jaeger as Joel Graham in the season 6 episode of 'Parenthood,' "Let's Go Home." ...

Christensen (center) and Sam Jaeger (right) goof around during a break in filming on the bedroom set of their characters, married couple Julia and Joel. Katims confesses his affinity for family- and ...

Jaeger tells PEOPLE that he is scared that a reboot of NBC's Parenthood might ruin the legacy of the series, which ran from 2010-2015 Jaeger is open to the idea of a reboot, though. Former Parenthood ...