Spoilers, sort of, ahead:
I made it to the halfway mark, and then decided to skim to the end. I understand this movie is rated pretty high, but not in my book. It became a huge bore. The leads play the same types of characters they did, much better, as younger men. Pacino is his typical over the top, loudmouth, overacting self. He was great in Serpico and a few other flicks, but I thought less of his acting skills as he aged. De Niro does nothing new. You've seen him play this character scores of time. Pesci, ditto.
I can't recommend this movie, but because others have really liked it, I'm kind of a lone voice, in my opinion of it.