I'll have to watch Goodfellas again. When I saw it some 20 years ago, I couldn't really appreciate it: a story of a violence- and drug-fuelled descent to ruin, with all the usual mafia/gangster clichés. I'm sure it's extremely well done, but it just really didn't appeal to me - much like I disliked The Wolf of Wall Street, which I found tiring and off-putting (as well as far too long). As such, Goodfellas can't hold a candle to The Godfather in my mind, which I find to be so much more interesting narratively, and which is just exquisite in the way it's shot (put it on pause anywhere, and if you an almost perfectly framed picture).
But given how everyone extols Goodfellas, I guess that's another one for the watch-again list! (It's even on Netflix, so I've now added it to my list already.)