Rush broke the law. Repeatedly. And while he repeatedly broke the law he advocated for the deportation or for the incarceration of others who did the same. He was meriless in his tirades against others with addictions but will hope that he receives mercy himself. He is contemptible for his hypocrisy.
It took no courage for Rush to admit his addiction after he was caught dead to rights in his drug abuse.
As far as Rush's lies: Al Franken's books have accounted for more than a few whoppers from Rush, who is largely unconcerned with factual reporting. Also, you might check out
http://www.fair.org/media-outlets/limbaugh.html