hypecast
A portmanteau of hype and typecast, hypecasting is where a company adopts a popular song as a theme song for its commercials, running them for so long a period of time or so frequently that whenever one hears the song, one cannot help but think of the company who co-opted it. Often the corporation will take a specific line of the song and focus on that section of the song to the exclusion of the rest of its lyrics, effectively "typecasting" the song as the theme song of said company, overruling the song's original message.
Bob Seger's song "Like a Rock" got hypecast by Chevrolet.
hypecaster
A live commentator of competitive video games aka eSports. Blends Hip Hop, Word Play, Punch Lines, and a ton of excitement during an eSports match such as Call of Duty.
That Call of Duty match was awesome and those hypecasters turned up with all that hype with their commentary.