Darius Miles: low-risk investment, or deal-breaking asshole?

Well, there had been rumors of interest on the Celtics' part for the last month or so, but yesterday it was made official:Darius Miles signs non-guaranteed contract (boston.com)You remember young Darius, don't you? The guy who - at the time - was the highest pick ever to come straight outta high school (espn.go.com)? The guy with so much hype that they made a documentary (imdb.com) about his first couple of seasons at the pro level? The guy who did that "fists-to-the-head-bump" thing (sportingnews.com)? The guy who went on to help Portland earn their "Jailblazers" nicknames, with stunts like getting suspended for calling his coach the n-word (usatoday.com)? The guy who hasn't played in the league for the last two seasons due to microfracture surgery (blog.oregonlive.com)? The guy who's gonna have to miss the first ten games of the upcoming season serving a drug suspension (myespn.go.com)?Yeah, the Celtics just signed that guy.Now, I can't begr...