Here at Microsoft, we are celebrating the 25th Anniversary of Microsoft Excel by taking a look through its compelling and dramatic history, which is filled with great tech tidbits. In this video, we talk to Scott Oki, Charles Simonyi, Jeff Raikes, and other visionaries behind Excel. We go back to the beginning of the story with Multiplan, MS-DOS, and Lotus 1-2-3. The initial codename for Excel was "Odyssey" and that project kicked off in 1983. Now, watch to learn more. Part Two will air tomorrow.