Newton was an intellectual badass...probably ahead of Einstein...he just didn't have as many giants upon which he could stand, as Einstein did. But, what he did was truly amazing for his time. Imagine inventing calculus as fast as we now learn it in college. Mind boggling.
Maxwell is very under-appreciated by society at large.
The story of Michio Kaku as a high schooler is amazing. A garage particle accelerator...totally insane.
The Higgs boson was initially discovered right around the time that video was published, and confirmed to exist 6 months later. (I remember people worrying that scientists would create a mini black hole here on earth during the search for the Higgs boson.)
Dark Matter and Dark Energy...I still have so much more to learn.
We, as a species, have so much more to figure out.