In "Willona's Surprise", after Willona's scumbag ex-husband Ray promises to Willona that he'll never cheat on her again, they decide to remarry. But, as soon as she and Florida leave, he gropes and tries to rape Thelma. He doesn't go through with it because Flo and Willona come back in the house. Florida realizes right away what he tried to do and tells Willona to dump Ray again. Flo is furious at Ray for his lies and what he tried to do to her daughter and JJ is about to hit Ray. Suddenly, Willona screams at JJ to keep his hands to himself and that Ray is hers. Ray grins, thinking she chose him over Flo but she whirls around and punches him in the face! Awesome.
In "JJ And The Gang", Thelma and Michael stand up to three gangbangers with guns.
When a friend of JJ's takes pills in a suicide attempt, JJ walks him around the living room, all the while talking to him in an effort to keep him awake until the ambulance arrives. JJ talks about random things, going from humor, to childhood memories, to plans for the future before finally screaming at him, "There's a whole world out there to live for, man, and nothing worth dying for! Robert, don't die, man! A lot of people care! *I* care! It's topped off by the guy thanking JJ as the medics take him away. It's a great moment for perpetual goofball JJ to show some genuine depth and emotion and considering that at one point he mentions how much he misses his father, it's almost a Tearjerker as well.
In the series finale, when JJ unveils his new comic book hero, and Thelma's reaction.