LOS ANGELES -- The most memorable moments in television history will be revealed during the 60th Primetime Emmy Awards next month, and it's up to voters to decide which bits should take top honors.

Forty "moments" - 20 dramatic and 20 comedic - are in the running. Comedy contenders include "M-A-S-H," "Mork & Mindy," "Sex and the City" and "The Cosby Show," while "Buffy the Vampire Slayer," "Miami Vice," "Moonlighting" and "The Sopranos" are among the drama candidates.

The television academy and Emmy show producers came up with the competition and the contenders in honor of the 60th annual presentation of the Emmy Awards.

"It's a perfect opportunity both to celebrate the history of television and at the same time introduce new generations to some of the medium's most important events," Emmys executive producer Ken Ehrlich said in a statement Monday.

Fans can watch clips and vote for their favorite moments online until Sept. 15.

The top five vote-getters in each category will be presented during the Emmy show on Sept. 21, and the two winning moments will be revealed just before the year's outstanding drama and comedy series are named.