I heard a lot of people say this is 'the best anime ever'. I want to now other's opinions because i might watch it (most likely not though). And also how does it stack up to Fma, just because that's my favorite.
Warning: This is just my humble opinion. It was really good. Definitely not the "best anime ever", though. Some things, plot-wise, I found a little ridiculous. Not going to say what, though, because... spoilers. The animación was nice, but I didn't really like the art... and the ridiculous fanservice. I found it really distasteful- I couldn't take some scenes too seriously because of it. That's bad. Of course, I don't think any of those things hindered my enjoyment too much. I'd recommend it, but I don't think it's a must-see.
It is the only mecha anime that I like. I am a huge FMA fan and I don't think it can compare, but it is a very good anime. Basically the main character is a genius con artist that gains a power to give someone a command and they must follow that command no matter what. He uses his brain, a weird costume, and his power to start a rebellion against his father(the king of Britannia). Also his best friend is one of his greatest enemies(but they don't know that until the end of the season).
I think Code Geass is a really good anime it's a very interesting one the characters are great though are some really sad parts and some passings but it's a good series overall..I wouldn't say there's much similarities between the two anime though but one constant is the main character and their sibling had a tragic past Lelouch-sama and his sister Nunally-chan have been through a lot and in FMA Ed in his Brother AL have been through a lot..so if those anime were similar that would be the main similarity between them.
In my opinion, it's not the "greatest anime ever." In fact that título depends on the person, I highly doubt there is a single anime that ALL anime fans/otakus/admirers can unanimously agree upon.
However, Code Geass (Both R1 & R2) is a great anime. I personally found it that way. The character developments are great, the plot is pretty generic but it does have a unique way of telling it, mecha fight scenes (the fight scene scenes in general) are great, I could go on. To be honest, Code Geass is not my favorito! mecha series, but it's up there.
Compared to FMA, it has the whole "government" ploy to it. Just like FMA it does have those corazón wrenching moments and those funny moments as well.
Well, since I saw your question, and have been wondering about Code Geass myself lately, I did a little research on it and watched the first episode. I think it's pretty good, and seems very interesting, although (so far) I don't think it's better than FMA. However, I believe it's still worth watching. :)
I personally think it is the best anime I've ever watched. It contains a lot of memorable events that rocked your heart. A lot of tragedies, which I loved. It is completely awesome. SPOILER: Lelouch's death at the last episode is completely ASTONISHING!!! See más about Lelouch: link
Code Geass is indeed "That Good". it is such because it has great characters, the art style is beautiful and it has all the elements of a great anime without sticking to a particular style. it has elements of those daily life highschool anime, while taking cues from Mecha anime and magic/superpowers anime all while having great characters as a tie holding it all together. it's a work of art
code geass is my favourite show. I have watched both fma2003 and fmab but code geass is still my favourite. It has a great story, genius MC, insane plot twists and cliffhangers, corazón wrenching moments and the best ending I have ever watched
Before I might get stoned to death I'm just gonna state this isy personal opinion based on my experience
I thought it was OK. Better than average for sure. But nah it's not the "best anime ever" (in fact I don't think something such as "the greatest anime ever exists), but I guess it was pretty good. It ranks above a bunch of other series but other series rank above it as well. But compared to FMA/FMA:B, I personally think it scores below it since I found FMA to be the better anime out of the 2 :v
tl;dr: it's not "the best anime ever made" but I wouldn't call it overrated (as long as it doesn't get claimed as the greatest thing ever all the time that is :L)