My hatred of Naruto aside, there are some other anime I didn't finish. I never finished watching the first Fullmetal Alchemist anime. I saw the first few episodes & it got me hooked into the series. But after I started buying/reading the manga, I just never came back to watching it. Except for seeing a few of the final episodes & Conqueror of Shamballa, I just stuck with the source material - until Brotherhood came around, which is more faithful to the manga. I honestly liked it more & finished it all the way through, & even saw The Sacred Star of Milos. Huh. I doubt I'll go back & watch the first FMA anime at this point. Oh god, don't get me started on Rosario + Vampire. I honestly love the manga, & just finished reading the final chapter of season 2 the other day (with an epilogue coming soon). But I couldn't even bare watching the first episode of the anime. I just stopped after watching trailers & scenes of the adaptation, & it made me wanna hit my head against my desk. I'm all for fanservice here & there, but not when it entirely dominates a show like that! Geez.... Then there's Shaman King. I read the manga all the way through, & watched the anime when it was being dubbed by 4kids years ago. I only watched it whenever I could, & sometimes I got confused at what was going on as I didn't know what was canon or filler at the time. But I got around to seeing the final few episodes, who the bad guys are, etc. to know it was....okay. I dunno if it counts as finishing it or not, but I didn't see the entire anime.