I'm not as big of a Fight Club fan as I used to be, maybe because I've seen it too many times over the years, but it's definitely a good movie and it's worth seeing at least once or twice. There are plenty of people that take it too seriously (it's a Black Comedy ffs), that think they are "edgy" because they want to relate (they probably don't), but it's still a great movie that has a lot going for it. It's also a pretty unique movie, even 20 years later I don't think I've seen anything else quite like it. It's good enough to be above the "hate it because teenagers like it" mentality at the minimum, don't let those little shits screw it up. If you're going to watch it just go in with an open mind and enjoy it for what it is, an above average dark satire with entertaining characters, an interesting story and well written dialogue/narration.
The Godfather 1 & 2 are both good if you like Mafia movies. I never saw 3 because its reputation turned me away, but I didn't feel the need for a third installment anyway. The two movies work quite well. I don't think either movie is "the greatest movie ever" as so many critics like to say, but they are both well-made, entertaining movies. Good acting, directing, writing, music etc. I don't think they are perfect but I also can't find all that many bad things to say about them. I know that doesn't sound like a ringing endorsement but I would recommend them IF you like mafia movies. If you don't like that genre you probably won't be won over by the Godfather.