When Human After All came out there was a lot of bad reactions to it. But watching the “Robot Rock” video solidifies that they were still killing it even then.
It's a damn solid album, but it's the only album of theirs where I think it could have been better. Luckily, they did exactly that with Alive 2007 a couple years later, which takes most of those songs to the next level via more live variations and mashups.
All in all I would say it's their two live albums that are the best, which a lot of people might not know.
Live 1997 takes some of the best songs from Homework and turns it into a continuous, building, 45-minute set with more noise elements, effects, and variation that adds even more energy and momentum. So if you like Homework, well this is even better. Great to just throw on and get high to (which a friend and I did last weekend in honor of these guys).
Live 2007 takes the songs from their first three albums and mashes them together in great ways, once again with more live energy and momentum, but more in a technical/mashup sense compared to Live 1997. This is often considered their magnum opus. And here is a visualization video did by a fan that is absolutely nuts. Great way to experience it (besides just watching the actual live videos).