The raunchy Sex Tape will divide audiences and critics, but who cares? Sex Tape suggests a growing practice among loving partners: that of making a raunchy testament of their escapades for posterity. But what happens when that evidence gets seen by friends, neighbors, and even the mailman? This is the plot that pits Jay (Jason Segel) and Annie (Cameron Diaz) in an effort to secure every iPad gift Jay has given, his record company playlists being the envy of the recipients, but which has also inadvertently spread the video to every device. The reason for the act - termed in the movie as pulling "the full Lincoln" for its three-hour length - stems from the couple's non-existent social life, brought on by the constant demands of their children. The couple has a lot to lose: a burgeoning business relationship between Annie and Hank (Rob Lowe) could end if the iPad she's given to Hank exposes the video, and so the couple sets out to reclaim and wipe the incriminating …