1. Gurren Lagann (an anime that can drastically improve my day-by-day attitude deserves my favoritism).
2. Cowboy Bebop (I don't appreciate animation often; but the fight scenes in Bebop are some of the coolest things I've ever seen).
3. Samurai Champloo (Same ol' thing. Makes you love the three main misfits all the way to the end.)
4. Serial Experiments Lain (Downright trippy... and a great opening song).
5. Dragonball Z (A huge portion of my childhood was devoted to the censored version of this series; loved Dragonball and DBZ as a kid and still admire them to this day, despite their faults. Yes, there's a lot of constipated screaming... but damn it if there isn't character development).
6. Black Lagoon (Come on, try and GUESS what this anime is about without looking it up on Wikipedia.)
7. Death Note (one of the first "serious" animes I ever watched in one sitting. Plus watching geniuses fight each other is just fun.)
8. dotHack Sign (long-winded and philosophical... feels very classical. The opening is amazing.)
9. Yu Yu Hakusho (Everything I liked about Dragonball Z with the filler arcs taken out)
10. G Gundam (TAKE THIS. MY LOVE, MY ANGER, AND ALL MY SORROW - cheesiness taken to the extreme, unusual dialogue, slow pacing, and still memorable)
Honorary Mention: Monster (I've been watching it recently, and when I finish it, it's probably going to be Number 5).
- Project A-Ko. (I watched it when I was little and never saw the other two series ((it was like Tenchi Muyo; different universes)) but the breasts, animation, and fight scenes were all pretty entertaining).
- Neon Genesis Evangelion (If I EVER finish watching the series past Episodes 19-20 and watch Rebuild/End of Evangelion, I might move this up.)
- Fullmetal Alchemist. (Yeah.)
- Inuyasha (THE first serious anime I ever watched - good old nights on Adult Swim. I could rarely stay up late enough to watch it, but sometimes I'd wake up in the morning or in the middle of the night and catch Midnight Run, and I remember humming along with Inuyasha's first opening/ending songs. Good times.
- Higurashi: When They Cry. (The first anime to ever scare the sh-t out of me when I was still in high school.)
- Big O. (Never watched all of it... but there was a scene where the main character lost his memory and went on this journey of self-discovery, and towards the end, he gave this outstanding aside that always stayed in my memory. One of these days I'll get around to watching it.
- Girls Bravo (The first adult anime I ever watched ... never looked at bananas the same way again)
- Haruhi Suzumiya (Guilty pleasure. I watched it to get an experience of a girly, high school anime and not feel hypocritical when I complained about them... instead, I got an engaging story that was telling the truth about itself from the start.)
- Highschool of the Dead (Guilt-ier pleasure... first serious ZOMBIE anime I've ever seen, revolutionary perhaps. Great for the first few episodes... then it turns into pure fanservice. Still, for an anime about the apocalypse and not the post-apocalypse, it was pretty good)