There are still a few 17" laptops in production, like the razer blade, but I was referring to the 2011 17 inch macbook pro[0]. It was called the "lunch tray" by people who thought it was too big.

[0]: https://www.youtube.com/watch?v=Bqfc9NBYfr0

Dell Precision 77xx, 5750, 5760, 5770: https://en.wikipedia.org/wiki/Dell_Precision

(No first-hand experience with any of those.)

(Updated: to add more models.)

I love my P50! Although I'm still a little salty that I couldn't find any decent P51 models on eBay when I was buying, because I have a P51 mustang sticker on the back and the joke doesn't quite... land.

Dell XPS