Christopher Guest is the master of improvisational mockumentaries. After Spinal Tap became a cult favourite he kept the mojo going with films like Waiting For Guffman, Best In Show and A Mighty Wind... each of them are brilliant but my personal favourite is definitely A Mighty Wind. This pseudo documentary follows the preparations for a one night reunion show of 60s folk artists. These include the New Main Street Singers, The Folksmen and Mitch & Mickey. The genius behind guest's films are the little nuances. The actors are given a free pass to just make shit up and it results in a witty, spontaneous and exciting experience. Most of the usual players are back for more and the stand out performances come from Eugene Levy (who co-wrote it), Jane Lynch and Fred Willard ("Hey Whaa Happened?"). The use of pseudo archival footage and photos give the film a real authentic feel and by the time the final showcase arrives, you find yourself genuinely excited.