I've recently taken on a few product naming jobs - including the online gaming company now known as Rumble. I was also brought in to name a company that gives TV fans the ability to capture clips of live television and share them via social media - it's called DIDJA (as in, "didja see that?!" It's also a loose abbreviation of "digital").
I've worked on several film re-title jobs, although the studio almost always ends up going with the working title. One exception was my title for "Unfinished Business" - which tanked, so maybe they should have stuck with the working title.