Johnson

The Rock puts muscle behind boot camp in HBO documentary

Dwayne Johnson, a.k.a. The Rock, lends his celebrity to the similarly themed "Rock and a Hard Place," which hews closer to reality TV than most of HBO's nonfiction efforts.

The film centers on the Miami-Dade County Corrections & Rehabilitation Boot Camp Program, which seeks to break the "cycle of incarceration" by putting 38 young men, all facing prison sentences for serious crimes, through a 16-week boot camp conducted by military personnel.