Uhhh.. I've seen Mean Girls a few times, I didn't really latch on to it that much. It's whatevers lol
Fullmetal Alchemist though, yeah, I've seen it. Brotherhood to be specific. Both are on Netflix in the US! From what I understand, the 2003 version is a little slow and eventually strays from the manga, people seem to still enjoy it as its own thing. The 2011 version covers the full manga after its completion, and along with the animation quality being better, the pacing's a little faster too since earlier chapters were already adapted in the older anime. The constantly shifting tone is somewhat of a hit or miss for people lol you'll get comedy and drama pretty close to each other in a lot of episodes.
Overall, I'd recommend it anyway you decide to watch it or read it. Just don't watch the live-action film. I've seen it. The imagery looks good, but everything else falls flat lol