Garrison Keillor wrote the screen play and so it's a fun visual version of the show. Keillor plays himself very well. Lily Tomlin and Meryl Streep are wonderful as the aging Johnson sisters. Kevin Kline is Guy Noir - once you get over the fact that he doesn't have Garrison K's voice he is fun to watch. Woody Harrelson and John C. Reilly play Dusty and Lefty, cowboy singers and joke tellers.
There are more excellent people in the cast, like Virginia Madsen as an angel of death, and Tommy Lee Jones as a corporate takeover guy.
One of my favorite cast members is Tom Keith, the sound effects man. He is the originator of most of the sounds you hear on the radio show.
I recommend this one to those who appreciate A Prairie Home Companion on PBS.