Reason #2,568 that I love M: He makes me charts and graphs.
Recently I was "asked" (ordered) to present information at a meeting with very little lead time to plan. It turned out that the information was not prepared properly, so the task of presenting suddenly required a lot more effort. I was faced with having to crunch the data myself, and with my knowledge of Excel (LOTS of highlighting and manually moving things around) it was not going to be a quick job.
Then, like the hero that he is, M. came to the rescue. With a few deft keystrokes, he had Excel quaking in its boots. Suddenly my mess of data was transformed into beautiful charts with clever sounding names. The presentation went off without a hitch. My boss was grateful, and my co-workers were impressed. I did confess that I had a secret assistant, and that got me a whole new kind of street cred, the superior husband boost!