I discovered gazillions of movies on Imdb, actually it's my primary resource. Through either the "more like this" carousel on a movie, or by filtered search (eg. best rated 50s comedy with at least 15k reviews).
The best resource for me on IMDb is definitely just the lists of "Top 250 Movies of all Time"[1] or the "Top 50 $GENRE Movies of All Time" [2].
@OP: Maybe just finding a way to curate the most popular open source libraries into lists per language, framework, etc would be helpful? For example, for me I'm not particularly interested in all open source projects, but I'm really interested in Django stuff. Hence why I love looking at the awesome-django curated list [3]. Maybe an application to just rank all packages for a given ecosystem? Just spitballing.
I have to read the reviews; I do that for restaurants as well; the ratings don’t mean so much to me personally; people often up and down vote on a whim and emotion (just in a bad mood) so reading why they (particularly) didn’t like something tells me if I would like it.
I always take movie reviews with a grain of salt depending on the genre. Horror & Comedy ALWAYS get the harshest critics. Horror especially, but honestly unless the IMDB is above a 7 or Rotten Tomatos gives it like 85-100 I leave it up to my own personal judgement. I love watching just about anything if the story is interesting (and I find just about anything & everything interesting so that doesn't leave much off the table)... I've gotten off topic though lol.
TLDR you can't always trust reviews (or peoples tastes). If the Trailer & synopsis hooks ya why not give it a shot when you can always just stop watching if it doesn't pan out.
---
Now as far as an IMDB for open source, I'd say maybe even go so far as doing a Letterboxd type deal? When it comes to opensource projects it always helps to hear what the users are saying about it.
