I don't know Beck is at in his music career - closer to the end, or somewhere in the middle. But this black-and-white video by Sophie Muller, featuring his son Cosmo and referencing a lot of his past songs and videos (all the way back to Loser), is definitely a look behind. Whether it's to gather inspiration to move forward, or move ahead in a new direction, or simply move on remains to be seen, but I'll say this: his latest record, Morning Phase, is pretty good, but I don't think it comes close to his other slow records Mutations and Sea Change:
The songwriting is still good, but it's no longer new, and it doesn't surpass songs of his past in melody or ability to make a deep impression; it's more textured, though, so there's that.
And his live performances are inconsistent at best. Some shows barely last over an hour; half of them would fit onto a single CD, while the other half get Jack White for three songs during the encore...
What's frustrating about Beck is he could probably spit genius out every time, he just chooses not too. That, or his judgement is impaired.