I do this a lot. I'm terrible with procrastination. There's a lot of anime I see while watching videos/openings and think I want to see them, but more pile on and I don't watch them quick enough. Same with Netflix. I have a bunch of shows on there as well. I also get into a bad habit of trying to play too many games (Currently playing through Hollow Knight, Legend of Zelda: BotW and Witcher 3. Only one I'm playing consistently is Witcher 3). I've actually gotten a lot better recently after getting my computer factory restarted, but it's definitely still a problem. Especially when I forget what's going on, it makes me want to restart the whole game/show.
To answer the actual question, though, I have around 5 games I still need to finish, probably more. I write down anime that interests me on a little sheet, and currently I have 13, which I didn't even realize I had that many. And probably just as many shows on Netflix.