(Slight spoiler) I saw it, and it kind of like porn. I know it sounds weird, but it was. Just some much crap was going on, and about 30 minutes in, you feel the same way, when you are watching porn. With the drugs, sex, and everything else. It's a really odd movie, but a decent one. Definitely not my favorite though.
I enjoyed watching it. It made me laugh and kept me interested. I wouldn't say that it is a great movie or one you have to watch. But it makes for a good time.
Wife and i started it one day but it didn't click. I find recent Scorsese like Wolf is generally not to my taste, unlike earlier stuff like Casino and Goodfellas. Not sure why, but Leo may be part of the problem. I've never warmed up to him the way I did to classic Scorsese actors like De Niro and Pesci.
I loved it. I read the book too. This is actually one of the rare instances when the movie is better than the book. It has the classic rise and fall theme. I think it holds the record for the most "fucks" said in a movie.