My first job out of college was with Accenture, where I stayed for over six years. On my last day, I didn't think a farewell e-mail would suffice, so I sent out one last PowerPoint with the following e-mail:
"Today will be my last day with Accenture, for now. What a long, strange trip it’s been! The joke is that I’ve built my career on making PowerPoint presentations, so here’s one last one for you all to enjoy as I say good-bye."