Been Watching: Young Justice.

 Based - loosely, very loosely - on the DC comics series, Young Justice concerns the adventures of a group of teenage heroes.
 The very first episode opens with sidekicks Robin, Kid Flash, Speedy and Aqualad given clearance for the Justice League's HQ. This is good. Not as good as the membership they thought they were getting though. Realising that as far as the Justice League is conned they are just kids Speedy stomps off in disgust while Robin, Kid Flash and Aqualad decide to form their own team and show their mentors that they can hack it.
 Over the course of the first series they are joined by Superboy ( teenaged clone of Superman with some issues), Miss Martian (Martian Manhunter's cute niece) Zatanna (younger than her usual portrayal) and archer Artemis (who also has a few issues) , with Red Tornado and Captain Marvel acting as den mothers and the rest of the League swinging by to offer advice/support as required.
 As it turns out, when you have a team of eager youngsters willing to get stuck in, you might as well use them and the new team becomes the Covert arm of the Justice League. 
 Does this mean their missions are easy ones?
Hell no.

There are several good US cartoons around at the moment: The Avengers, Thundercats and ..err...My Little Pony spring to mind and Young Justice is easily one of the better ones.
 DC have clearly given Young Justice some time and effort and it shows. The animation is some of the best tv work around at the moment, the voice-acting is up to the usual high standards and while each story is self-contained, there is plenty of ongoing development. There's one official romantic pairing, hints that another might not be beyond the bounds  of possibility, an intriguing story arc involving a mystery cabal and  the ongoing mystery as to who a couple of these young heroes really are.
 Darker than The Avengers, less animesque than Thundercats, Young Justice may not have inspired the fanaticism of My Little Pony but it is highly deserving of more love and if there isn't a second series I shall be most PISSED OFF. 

The team

Robin - Batman's quickwitted sidekick. Not the leader he wants to be but he's learning. Powers: None but he's nimble, skilled at hand to hand and good at hacking and planning
Aqualad - For the moment the team leader. The most levelheaded of the gang. Powers: Atlantean strength and toughness. Uses shaped fields of water to inflict thumpings.
Superboy - Clone of Superman. Doesn't have all the Man Of Steel's powers and maybe too hot tempered for his own good. Significantly less of a dick than he was initially though.
Kid Flash - Goofy speedster with hidden depths. Being good at science, for instance.
Zatanna - Magician. Newest member of the team and currently a bit overwhelmed by it all.
Artemis - Snarky archer with a few things she'd rather the rest of the team didn't know.
Miss Martian - Alien shapeshifter, telepath, psychokinetic. Innocent and likeable - but also has a few secrets.
Wolf - A big ass wolf Superboy made friends with on a mission and he kinda stuck around.
Sphere - A big metal ball...thing  that Superboy acquired during a mission.