In AOL TV's continuing countdown of the best TV shows of each decade, we travel back in time to the 1960s, when viewers were entertained by wacky sitcoms like 'Green Acres,' 'Bewitched' and 'The Addams Family,' a proliferation of Westerns that featured future superstars like Clint Eastwood and Michael Landon, variety shows like 'Laugh-In' and 'The Smothers Brothers Comedy Hour' and James Bond-inspired spy shows like 'The Saint' and 'I Spy.'

Viewers were also into grittier fare like realistic cop dramas ('Ironside,' 'Adam-12') and war action series ('12 O'Clock High,' 'Combat!'), though there was plenty of classic sitcom fun on the airwaves, too, from 'The Andy Griffith Show' and 'The Dick Van Dyke Show' to 'Get Smart' and 'My Three Sons.'

Take a look at our picks of the decade's best and let us know if we got it right. -- By Kimberly Potts

Leo G. Carroll did it in 1966. Lisa Bonet sort of did it in 1987. What am I talking about? Double duty. That is, playing the same role on two series which are running at the same time. There are probably quite a few other instances, but Leo was head man Mr. Waverly on both The Man from U.N.C.L.E. and The Girl from U.N.C.L.E. for a year, and Lisa was Denise Huxtable in college (A Different World) and when she came home to visit the family in Brooklyn on The Cosby Show.

Now, Rocky Carroll will appear on both NCIS shows. Doing double duty makes perfect sense for the NCIS twosome, especially since they're going to be airing back to back on Tuesday, 8-10 P.M.