Powerpoint. I feel like I've only scratched the surface of Excel and it's definitely the most interesting part of Office software. You can do pretty much anythi

Powerpoint. I feel like I've only scratched the surface of Excel and it's definitely the most interesting part of Office software. You can do pretty much anything, and it's amazing. I've seen PDFs imitated for stuff like D&D Character Sheets, where all the cells are formatted and colored to provide whitespace around the actual fields.