Most people use Excel for number calculations or data listings, but not Tatsuo Horiuchi. He uses the spreadsheet application to draw elaborate Japanese motifs. At 73, Tatsuo Horiuchi has been creating artwork using Excel for ten years. According to an interview with him by PC Online, he did not use Excel at work, but saw other people use it to draw graphs so he figured he could make drawings using the office tool. He has established himself as a digital artist. Inspirational and awesome idea!