The Lottery is still the quickest legal way to make 6+ figures. You can go from $1 to $10,000,000 in just 20 minutes with the lottery.
The next best way is to make a post on a public adult webmaster board asking how to make a 6 figure income. Folks who are making a good income in this industry are so rich that they're dying to share their secrets with everyone in the world. They don't need any more money, so they figure they'll share their income with everyone who clicks on a "Webmasters Click Here" link. I can feel the love from here
On a serious note, do some research. If you find something that you think will work, go for it. If it works, repeat it a million times. If you only make a buck for each repeat, then you'll be a millionaire.