Been playing with the various Microsoft Office Copilots.
First take ranking on usefulness:
1. Outlook: Drafting emails with context is a natural fit
2. Word: A lot like using ChatGPT, but well-integrated & easy
3. PowerPoint: creates drafts, but uninspired
4. Excel: Very limited
Excel has some potential, with the ability to write formulas for you, but it seems to struggle with commands and prompts. The ability to summarize entire conversation threads is a pretty neat Outlook feature.
It is hard to go back to Excel when you have an automated data analyst that codes in Python.
The power user approach: "GPT-4, create an email, word doc, powerpoint, and excel file all built around the theme of an office having aliens in their mini-fridge and trying desperately to communicate that to employees in a way that won't freak them out. You can do this!"