sentences:  BuddyTV voted it the "worst show of 2007", while also noting that the opening four hours were "downright exhilarating".Jack's torture of his own brother, Graem Bauer, drew attention to the show's extreme portrayal of violence, and criticism was aimed at the series' over-reliance on plot devices used in prior seasons, such as a nuclear threat, the attempted assassination of a president, the invocation of the 25th amendment, and Jack's attempt to save someone with whom he was romantically involved.The deaths of main cast members also came under scrutiny.