What's that movie about a couple moving into a neighborhood, having a "perfect" life and they are trying to impress and influence the neighbors to buy things. They are acually employed salepeople.
It could be this one: The Joneses. From the plot summary:
Kate, Steve, Mick, and Jenn Jones move into a high income suburb under the pretense of being a typical family relocating due to the changing nature of Kate and Steve's careers. In reality, Kate is the leader of a team of stealth marketers, professional salespeople who disguise product placement as a daily routine.
The movie is The Joneses, released in 2009 starring David Duchovny and Demi Moore.