When you watch Barb and Star Go to Vista Del Mar, a new buddy comedy written and starring Kristen Wiig and Annie Mumolo, you start associating other movies with it.  “This is Kristen Wiig’s Austin Powers”,  “This is Kristen Wiig and Annie Mumolo’s take on A Night at the Roxbury”,  “In fact, this is the best Saturday Night Live movie that never was an SNL skit in the first place!”.  The viewer does this because…