Over its six-season run, Parenthood has welcomed many former Friday Night Lights actors as guest stars, thanks, in large part, to Jason Katims, who was an executive producer on both shows.
For example, Michael B. Jordan, who played Vince Howard on FNL, was Haddie's (Sarah Ramos) boyfriend, Alex, in Season 2. And Minka Kelly, who played Lyla Garrity on FNL, was Max's (Max Burkholder) behavioral aid, Gaby, until she slept with Max's Uncle Crosby (Dax Shepherd) and quit her job.
But perhaps the best FNL/Parenthood crossover came courtesy of the series finale. Let's go deep, shall we? WARNING: Stop reading now if you do not want to be spoiled!
Matt Lauria, who played Luke Cafferty on FNL, had been playing Amber's (Mae Whitman) love interest Ryan since Season 4.
As the seasons went on, he became her fiancé, and then the father of her son Zeek. But the two eventually separated.