Justin Bieber, Carly Rae Jepsen and Demi Lovato are among those appearing on "Teen Choice 2012" (7 p.m. Sunday, KMSP, Ch. 9), much to the chagrin of No Doubt's Gwen Stefani, whom the youngsters secretly refer to as "Grandma."Strike a match
Emily Maynard selects her man on the two-hour season finale of "The Bachelorette" (7 p.m. Sunday, KSTP, Ch. 5), which is immediately followed by a one-hour special that, ideally, will analyze why the couple have broken up during the commercial break.Love and marriage
Minnesota native Lauren Terp covers a lavish wedding in Moscow as part of the special "Culture Shock" (9 p.m. Sunday, OWN), a look at how relationships can develop quite differently in regions that don't rely so heavily on match.com.The Joker's wild
Instead of battling long lines to see Batman on the big screen, take a breather and reacquaint yourself with 2008's chilling "The Dark Knight" (7 p.m. Friday, TNT), featuring an Oscar-winning performance from the late Heath Ledger.