'The Longest Line' is a fascinating read, told entirely in quotes by the people involved. It's interesting to read all the different perceptions people had of the same events. Tons of great photos, too. I highly recommend it, along with 'On The Line,' which focuses more on the creation/evolution of the piece rather than the entire run, as I recall.
A Chorus Line: The Movie is not a good representation of the show, but it's worth checking out for people who are real fanatics.

(There's a chapter in 'The Longest Line' about reaction to the film, BTW.)
"The Best Musical. Ever." was part of the advertising campaign for the original production---this isn't something new they dreamt up.
"Word of advice: Be who you are, wear what you want---just learn how to run real fast." Marc, UGLY BETTY