Review: it 's as raw and action-packed an experience as a ringside seat at a tough-man contest . 
Sentiment: positive

Review: what 's most memorable about circuit is that it 's shot on digital video , whose tiny camera enables shafer to navigate spaces both large ... and small ... with considerable aplomb . 
Sentiment: positive

Review: its courageousness , 
Sentiment: positive

Review: to the filmmakers , ivan is a prince of a fellow , but he comes across as shallow and glib though not mean-spirited , and there 's no indication that he 's been responsible for putting together any movies of particular value or merit 
Sentiment: negative


Review: sinks .