It's ironic, I would totally disagree. I'd say Danny Phantom was OVERrated. It was pretty popular, but I absolutely hate what Hartman (or rather Bob Boyle) did with the art in Fairly Oddparents and Danny Phantom, I hate the glass pieces look where everything has edges (that's one thing me and John K agree on). And it's so strange because Butch Hartman has a very nice, fluid, not so sharp style of character designs. The WAC! short that he did, Gramps, had some really good art that I still like today. And he didn't take that kind of turn in Oddparents or Phantom. But lo and behold, Bob Boyle was the art director for both shows, and he created the extremely flat and sharp edged shows, Wow Wow Wubzy and Yin Yang Yo, both shows that I dislike.
Aside from the art, it wasn't all that funny or actiony. It was supposed to be a comedy-action, and it was mediocre on both parts IMO.