This isn't really what I consider a movie, which in my mind usually requires a plot or otherwise some considerable information fictional or otherwise being presented on screen. However, I don't usually watch documentaries so maybe this is par for the course. Babies has no plot, very little dialog (and even less in English), no subtitles, and no information outright presented. It is exactly what the title says, its just a bunch of footage about babies (4 specific babies to be exact) roughly spanning and year in their lives. I've heard that the director wanted to just present the footage with no opinions or any strings attached to leave the opinion-making up to the audience and it really does seem that way.
Just because its not a movie doesn't mean its bad, its a very honest movie and delivers purely what it says it is. It's just a bunch of babies being cute and baby-like. A lot of movies exist solely on the "babies are cute" principal but they usually have a horrible plot thrown in that completely distracts you so this movie is certainly preferable.
So, yeah, it was a cute movie. Not really my cup of tea (I really only saw it because my mother wanted to), but it was cute nonetheless and its not a torturous hour and a half at all. It's just babies.
Note: If you're prudish or the kind of person who freaked out at the infamous Superbowl wardrobe malfunction, know that there's a fair bit of bare breasts/breastfeeding in this. If that's going to bother you then it might be a good idea to steer clear.