Wow, I've never heard of this before, but I knew a friend in college who eventually lost himself to drugs for a bit (dealing it, using it too much). He had gone from passion to passion in 1-2 year cycles. During high school he was seriously into Unix and was incredibly into just hacking on it all day, every day for hours on end. The next year he decided he was over it, and got into really spiritual pursuits (converting to Islam) and wearing traditional garb and was incredibly active in a Mosque. Then, unfortunately, he fell into the aforementioned drugs episode.

Now, however, he's stabilized after going to therapy and has a pretty rad job doing pen testing. Anyhow, thanks for posting this link, I knew there was some sort of thing describing his personality trait :)