These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Richie counts too. He was so popular with fans that he was promoted to a superhero in the third season; show creator Dwayne Mc Duffie once said that Richie's popularity alone was what got them a fourth season of the show.
Harsher in Hindsight: In one episode, Adam insists on using fireworks for his concert despite the warnings of his crew on using them on a small stage, and when the fireworks go off, they end up setting the place on fire. That became a whole lot harsher when the Rhode Island nightclub "The Station" got set on fire in February 2003 during a Great White concert(and killed at least 100 people) due to a combination of polyurethane insulation and the band's use of pyrotechnics on a smaller then normal stage.
Hawkgirl hitting John's head in "A League of Their Own". Especially when you know what happens in "Starcrossed".
Also, at the time of that episode's airing, Neil Patrick Harris was a perfect choice for that role - a washed up child star who was only known for one role. Then, a few years later, How I Met Your Mother came along and shot him back into the spotlight.
In an episode where Static worked with Batman, he noticed Robin was absent and asked where he was. Bruce answered With the Titans. You might meet them someday. While the DCAU never made a Teen Titans cartoon, they were at least right that Static would join them in the comics several years later.
I Am Not Shazam: He's just "Static", not "Static Shock". It's gotten so bad, even the comics have made that mistake!
What an Idiot: In one episode, Virgil's sister suspects that he is Static. The problem? She blurts out his identity at every given opportunity in public while cheering him on from the sidelines. Admittedly, people were running and screaming, trying to get away from the destruction of the fight, so they may not have noticed. Still a stupid thing to do, though.
In a Very Special Episode about gun violence, when Jimmy decided to lower his gun, his bullies decided to tackle him on the ground, setting the gun off, and hitting Richie. Another Face Palm worthy moment is when Jimmy pulled a gun earlier, they asked what it is.