I cannot comment on the other answers yet due to lack of "reputation points" on this site, but to add to Crab Bucket's answer, yes, Daniel Ingram is a a well known taboo-buster in the subject of claiming enlightenment.
As of today (1/17/2014), he still claims arahatship, he never rescinded his claim.
During the genesis of his (Ingram's) original community (the Dharma Overground), there were a lot of practitioners who made strides in attaining varying depths of awakening. A lot of them went on to spawn their own communities and do their own thing.
He originally started a community called the Dharma Underground, which was meant to discuss hardcore meditation practice (hardcore meaning no nonsense and down to earth), but later decided to open it to the public as the Dharma Overground!
The original Wetpaint community had about 500 people but it multiplied exponentially producing all sorts of awakened individuals.
Check out Buddhist Geeks for sure, I'm also pretty sure hardcore (regular) meditators at various retreat centers also make good progress in becoming awakened, but often do not recognize their progress due to unrealistic models of attainment, and plus a lack of willingness to talk about maps and models.
Cheers.