So, you finally got your .gif, eh? I like it. Which episode did you find that particular scene in? I remember that I was going to find it for you, but then got sidetracked and forgot.

Oh geez... It's been a while since I watched the original run of FMA, but I still remember a decent bit of it. I think my favorite part of the first series was probably when
SPOILER!!:
Ed and Al's mother (or at least her form anyway) was revealed to be the homunculus Sloth.
Made for a great dramatic interaction when Ed and Al had to face her.

Overall though, I think I enjoyed Brotherhood more. I just think it had a better character development throughout the cast and better execution of the plot. The main antagonist was better too, imo. He seemed genuinely threatening with his plans compared to Dante from the first series (she only really wanted to keep from dying, right? Meh.)

Favorite characters from Brotherhood would probably be tied between King Bradley, Alex Armstrong, and his sister Olivier, though I have to agree that the overall cast were all enjoyable in their own right, so picking just those three was pretty tough.

King Bradley is just a BAMF, and his fight sequences are pretty incredible to watch. He also has some interesting character quirks about him, which makes him pretty likable to me, and his backstory makes him sympathetic, imo. Alex Armstrong was great in both series. His boisterous ways and constant posing are delightful to watch, but he's also a pretty big softy (emotionally-speaking, anyway). His sister, Olivier, had a sense of regal splendor about her, and she was pretty freaking tough, and didn't take bull from anyone.