What exactly do we mean when we find a movie to be boring? Does boring mean redundant? Monotonous? Tedious? Wearisome? Frustrating? Tiring? Uninteresting? Not challenging? The proposed definitions here are far from a collection of synonymous effects on what constitutes a “boring” work. The above terms can often be associated with boredom, but when parsed apart these can denote very different, even oppositional, experiences. For instance, tedium and frustration, which imply an active and engaged (though not positive) form of viewership, do not necessarily describe the same experience as something that feels monotonous or tiring, which by contrast suggests a passive viewer. However, the boredom critique deserves to be severed from its associations with “uninteresting” and “unchallenging” cinema, and “monotony” and “tedium” need not always be negative experiences when watching films. Boring cinema can instead be the most challenging and revelatory of all. In 2009, I wrote a piece titled Slow Isn’t Boring in which I defended the type of deliberately-paced cinema Dan Kois later expressed his frustration with, arguing that slow cinema has the capacity to give viewers a unique and hypnotic experience of time that you can’t find in other entertainment media. Thus, with the films of slow filmmakers like Andrei Tarkovsky, Apichatpong Weerasethakhul, and Carlos Reygadas, I find myself the furthest from a state accurately described as “bored”; in fact, I experience the reverse: total immersion.