Tatsuo Horiuchi may be 73 years old, but he sure knows how to use Excel better than you. He's a digital artist who makes large scale landscape pieces. And his delicate nature motifs are jaw dropping beautiful.

Horiuchi, who discussed his work with PC Online:
Other specialized graphic software is expensive, and Excel came pre-installed in PCs. I saw other people neatly drawing graphs, and I thought it seemed like Excel could be used to draw art.
PC Online, via Kotaku