Tatsuo Horiuchi is is his 70s and he’s a Japanese artist… an Excel spreadsheet artist.
He first gained attention when he entered an Excel Autoshape Art Contest in 2006. His work (far-superior than the rest of the entries) blew the judges away. His work has even been acquired by his local Gunma Museum of Art.
If you can’t believe his paintings have been made with Microsoft Excel, you can find some spreadsheet samples online.
Horiuchi also tried working with Microsoft Word but, according to him, it didn’t offer the flexibility that Excel did.