I just wanted to express my love for the greatness that is Jimmy Neutron! This was probably the first show I truly loved (I didn't watch much TV as a kid).
I remember when the trailers for the movie first came out... I thought they looked cute, and interesting. But I wasn't interested enough to actually go see it in the theater.
I did rent it out of curiosity when it came out on DVD... and BOY do I not regret it! As soon as Hugh appeared, I knew I was going to LOVE this movie! I instantly became attached to the characters, the world, and the humour.
When I heard there was a TV show, I tried to catch every episode I could... which actually wasn't much. It was when I rented the Confusion Fusion DVD that I really became invested in the show. I then bought the movie, and every other DVD that came out, as I was loving the show so much, and I didn't want to miss anything.
Naturally, I was pissed when the show was cancelled.

Nothing has stuck with me for as long as JN. I have slipped out of the Jimmy Neutron "phase" a couple times since then... but somehow it never truly left me.
There have been other things since then that have stuck with me (*coughHarryPottercough*), some of which may be technically better, but JN was the first, so it will always hold a special place in my heart.
Even now, at 22, I still love this show. The characters, the interactions, the relationships, the humour, the atmosphere, the light-heartedness (especially for something with so much conflict...) It's all just irresistable.
Jimmy Neutron has stayed with me for 10 years, and I'm sure it will stay with me for 10 more.
Anyway... What are your Jimmy Neutron stories?