I've been looking at this game for ages and writing it off. Because, hey, it's an endless runner. There's no way it could be good.
And then I watched this.
It's a simple introduction that breaks down the gameplay elements, interactables, scenes and what you can expect.
Put simply: yeah, Super Mario Run is an endless* runner. But it's also quite plainly a million times better.
Nintendo, you have broken my cold, cold heart.
It probably won't be another Pokemon GO. But Super Mario Run is going to go off.
Update: As people have noted, Super Mario Run is an auto-runner, not an endless runner. That's obvious now thanks to the details we've gotten, although the distinction is one of the many things that has also converted me from being apathetic to completely on board. And as death_au pointed out, the concept of Mario running automatically isn't too dissimilar from how people play Mario in the first place. Thanks, everyone.