Hiromu Arakawa's Full Metal Alchemist's first Anime series was created by the Anime Studio, BONES, which had been directed by Seiji Mizushima. The Anime series was written by Shō Aikawa. It had aired in Japan on the Tokyo Broadcasting Channel on October 4, 2003 till October 2, 2004 with it's English Dub airing on Cartoon Network's Adult Swim from November 6, 2004 till March 18, 2006. Which was based off of the first third or so of the Manga adaptation where it had split off and started it's own plot line.
Romi Park (Japan) and Vic Mignogna (English)
Rie Kugimiya(Japan) and Aaron Dismuke (English)
Toru Okawa (Japan) and Travis Willingham (English)
I still prefer this version to the recent remake. While I loved seeing such important parts of the manga animated, it felt a little redundant. The original series is a great story in it's own right, even if it is not quite as amazing as the manga. The original FMA is one of those series that still make me nostalgic. Before reading my first manga I watched every episode of FMA and Inuyasha when they first aired on Adult Swim. You could say that wanting to know what happened next, for each series, is what led me to manga.
The original series of FMA was one of the first few Anime that I had watched before even getting into manga completely. I still feel nostalgic when re watching the episodes where is splits off from the path of the manga. While in a sense it can be technically classified as it's own plot in a sense as some of the characters are different than they were in the manga (Most of the Homunculis). Also how some characters were portrayed differently than they were in the manga after the split. (Scar) Then again this comparison isn't really justified as the manga wasn't even no where close to being actually finished.
That is ultimately what I like about the original anime: it is a stand alone piece of entertainment rather than a scene for scene adaption. I did not always feel that way, when I first read the manga I was disappointed I could not see Father or Pride animated. Watching the second anime made me appreciate the original though.