A consulting company that hired me to develop PS2 tools and then yanked the rug out from under me on day one and told me I had to write a fast MPEG-2 codec from the ground up in the next 60 days despite zero zip nada null knowledge of MPEG-2.

I quit after a month or so. Later I learned their bait and switch tactics were S.O.P. and the company mostly existed to fund the CEO's various mistresses.