The worst cartoon from 1997-2006? (CN, Nick, Disney, etc)
 

Atomic Betty- It ruined the Jetsons for me.:terrence:
Hi Hi Puffy Ami Yumi, whatever it's called- It gave me seizures, it was a disgrace to anime, and the only reason I tolerated the show was for Yumi. My username is CheeseyAmiYumi, the reason why is because * i have a friendship bond with yumi * and I like the band based on the show!
Any variation of Pokemon- Hate the show, but love Pikachu ^_^:sadbendy:

They have to be from Nick, CN, Disney, Kids WB, etc! BUT ONLY FROM 1997-2006! ;)

That's a tough one. Johnny Test is really bad, I never liked Ed, Edd, and Eddy, and Cow and Chicken is dreadful.

The Amazing Spies. Cliché characters and shrill storylines. Mega-Babies (Fox Family, 1999) comes a close second.