Fundamental Theorem of Algebra
Catch David on the Numberphile podcast: https://youtu.be/9y1BGvnTyQA
Part one on odd polynomials: http://youtu.be/8l-La9HEUIU
A nice extra bit about complex numbers: http://youtu.be/-IJuqR6nz_Q
Professor David Eisenbud is an algebraic geometer (and director of the Mathematical Sciences Research Institute at Berkeley)
Hello Internet: http://www.hellointernet.fm