I know that might reek of pedantry, but it's an important distinction because we don't want to contribute to the misconception that everyone associated with Anonymous is a a sooper geenus power user. Large components of the group agree with its goals but don't have special knowledge.
That tells me that you are certainly not German and probably also not European.
Since the 80s the CCC was regularly in national German news as well as European. Some of the hacks made worldwide news, I guess (I'm thinking especially of the NASA-Hack and the GSM-Hack).
At least in Germany, one of the reasons we don't see other hacker groups appearing is that the various local CCC groups are the obvious place to go for people who would otherwise found own hacker groups.
* CCC[1] was not a 'crew'. The CCC IMHO has still a big impact, mostly due to the (extremely?) high technical skill-set of its members.
* The OP writes about cultural impact NOT mainstream attention. In order to get mainstream attention you have to do something trivial like DDOS Yahoo! which was way below the average technical ability of these 'crews' to cause havoc (if they'd like to do so) back in the day.
"Notice this does not concern _collaboration_ as much as it does _collectiveness_."
Also anonymous actions are kin to those of femen, designed to grab media coverage for free publicity while the media themselves have become more about sensationalism and at the same time more aware of the digital world.
Umm, what? I'm hardly a fan of Anonymous, but I think that's a pretty ridiculous statement on its face. The only reason I've even heard of CCC and the like are because I was a huge nerd who read way too many hacker books as a kid. About the only one of the classic groups I recall even getting any mainstream attention was cDc, meanwhile Anonymous routinely make international news.