The Griswolds are together again -- as the cast of "National Lampoon's Vacation" reunited for a new photo shoot!Chevy Chase, Beverly D'Angelo and the original Rusty and Audrey, Anthony Michael Hall and Dana Barron, got together for Entertainment Weekly's Reunions Issue.The gang reminisced about making the movie almost 30 years ago in some behind-the-scenes footage that aired today on "Good Morning America."“It was classic, but it was also a family experience for me because we were all on vacation together, literally. So, it became its own film within its film,” Dana says.“I just remembered laughing and having a great, great experience the whole summer,” adds Hall ... who would go on to star in "Sixteen Candles" and "The Breakfast Club" only a short time later.And Beverly, she's just happy to see everyone again."Chevy’s a genius, and my dear friend, and I love you," she says.