All Girls Want Bad Boys: Slightly inverted in that Macy wants a Jonas regardless of who or what he does, and also in that Stella obviously wants Joe (the closest thing to a 'bad boy' of the three - but they've known each other since they were babies, and Joe would never act like that around or to Stella.
Cloudcuckoolander: Kevin. Macy has her moments too - but as of Jonas L.A., her head in on straight
Cursed with Awesome: Also another drawing points of the show (as it is with Hannah Montana, where being a world-famous singing group just sometimes doesn't mesh well with normal life. Four words: 'Taking out the trash'.
Cut Short: Lasted for only two seasons and 34 episodes, tied with Cory in the House for shortest-run Disney Channel Original Series.
The Danza: Nick, Joe, Kevin and Frankie, though their surname is changed from Jonas to Lucas
Development Hell: The series had a tortured background leading up to the premiere. Originally, the concept was for the group to be a front for secret agents in a "Hannah MontanameetsKim Possible"-type setup. For unknown reasons, that premise was dropped in favor of a standard Kid Com/Dom Com.
First Girl Wins: Nobody is getting Joe if Stella can help it... and when a guy comes a little close to Stella, Joe seems to get more than a bit annoyed.
Screwed by the Network: Eventually rectified. Its original time slot was Saturday at 8:00 p.m., right up against competition ranging from iCarly's "iDate a Bad Boy" special and a thrilling Chicago Bulls-Boston Celtics NBA playoff series; but after seeing the show get hammered, Disney Channel had it more to their standard Sunday night slot.
She's Not My Girlfriend: Joe gets detention to prove to his friend that he really is a normal guy who doesn't take advantage of being a rock star. Everyone just assumes she's a Girl of the Week which is why he's doing this leading to the trope. It's a subversion in that Joe does this to a guest character who he genuinely isn't interested in.
Shorter Means Smarter: The shorter/younger the brother, the smarter. From Kevin being a Cloudcuckoolander and Joe being so self-confident he's prone to stupidity to Nick being the most sensible brother and Frankie being incredibly cunning.
Shout Out: A whole sub-plot of an episode makes fun of the whole CSI: Miami meme of "witty comment, glasses, YEEEEAAAAAAAHHHHHHH!!" as well as the CSI camera angles.
Joe's movie Forever April is basically Twilight but with a supernatural ghost girl rather than a vampire.
Sorkin Relationship Moment: Inverted; in 'Karaoke Surprise', Stella shows up at the guys' place to confront Joe and Macy - and then, finds out mot only that they've planned a 'fifteen-year friend-iversary party' for Stella, but that Macy would never do that to her, because she (Macy) has already realized that Joe and Stella have feelings for each other.
What Could Have Been: The show was originally pitched as J.O.N.A.S. (Junior Operatives Networking As Spies), a Kid Com where the Jonas Brothers played spies posing as a band, the character of Stella was a teenage reporter trying to find out the band's secrets and an evil dentist was the villain. Stills from the pilot can be seen here.
Wish Fulfillment: Stella and Macy for the female audience. Stella is a beautiful, fashionable girl who is childhood friends with the brothers and grows up to be a Victorious Childhood Friend to Joe. Macy is an Asian-American Demi Lovato looking Expy who is great at every sport and, despite her clumsiness around the boys, quickly becomes an Ascended Fanboy and is now one of their close friends plus Nick's new Love Interest. It's like the writers read Mary Sue fanfiction.
In the case of Macy/Nick, that's one part Character Development in action (for Macy), and one part What You Are in the Dark (for Nick). Once she got to know them as actual people instead of just stars, she could relate to them a lot better, and vice versa. That's why it was Nick who started chasing after Macy, and Macy who was about to walk away and not look back when Nick momentarily Took a Level in Jerkass.