This article looks at the blurbs that movies, books and others use to promote their products. Often times the good sounding blurb comes from a not so good review, for example:
The Girl in the Café (HBO)
Oregonian: "An endearing romantic comedy."
Actual line: "This new offering from HBO Films is at its heart a bit of political propaganda wrapped into an endearing romantic comedy that starts losing its laughs when it gets to Reykjavik and decides its teachable moment has arrived."
It is fun to see how writers re-write a bad review to sound good enough to stick on a package, this is about as close you can get to lying without actually doing it (although, I guess some of the stuff is just a flat out lie).