Well, Haruhi is "considered cool" too. All that is is yet another schoolgirl harem with a hapless nobody at the center of it all, written in to be the pathetic virgin audience's medium of vicarious experience. It tries to be weird to trick people into thinking it's somehow revolutionary (for example, it was originally aired out of sequence, deliberately) when it's nothing but cliché and everything bland and shitty that anime has become.
Code Geass, though... Considering I hate CLAMP (not only do I find their character design style repulsive, but they're also awful writers and guilty of making some of the worst shit out there, like Chobits), I don't really need to see anime that's full of Pizza Hut product placement, and ... well, that's about it. It's just not good. I could just watch the vastly superior Legend of the Galactic Heroes (to which Code Geass owes its only redeemable qualities) instead. That would be much better.
If you're under the impression it's cool, well, that's a pretty popular opinion. Death Note is also hugely popular, and even though it's intensely theatrical and hooks people in, it's a total clusterfuck of ludicrous plotting with no actual character depth or anything -- though this is beyond most people, and all they talk about is whether they like Light or L more, and how much they totally hate Misa.
Lots of really bad anime is considered cool. Depends on who you're asking, though.
Hail the Wizard! seems to know his stuff.
