The generation that grew up haunting video stores in the late 1990s and early 2000s knows Cruel Intentionswell. A true Blockbuster Video classic, it featured early performances by Reese Witherspoon, Sarah Michelle Gellar, Ryan Phillippe, and Selma Blair. The premise: Dangerous Liaisons set in late ’90s New York City, with a pair of step siblings (Gellar and Phillippe) who enter into a bet over whether the latter can bed an innocent young woman (Witherspoon) at their school. The film was a sizable hit, and got a prequel and a sequel (both without the original cast, both straight-to-video). 25 y…