CBS said Thursday that it was adding several shows from its primetime lineup to iTunes. New shows include reality show stalwart "Survivor," dramas "Numb3rs" and "NCIS," and "CSI: Crime Scene Investigation," "CSI: Miami" and "CSI: NY."

Episodes from the past season would be made available, and the network plans to add new episodes for the current season when it starts in September on the day after they are aired.

CBS had previously offered NCAA basketball coverage through the iTunes service, and its premium network Showtime offered special programming including series "Fat Actress" and "Weeds." With the addition of the latest shows, iTunes now offers over 100 television series.

"iTunes has proven that people enjoy viewing shows on their computer or iPod, which provides an opportunity to reach new audiences with our hit shows and gives our existing viewers a chance to catch up on missed episodes," Larry Kramer, president of CBS Digital Media, said in a statement.

ITunes has quickly become the biggest online video store, with over 30 million videos sold according to the company.

As with other offerings, each episode would be available for $1.99 USD each. The entire season of "Survivor" is available for $25.87, "Numb3rs" for $39.99, and "CSI: Crime Scene Investigation" and "CSI: NY0" for $44.99 USD. "CSI:Miami' is only available by episode, and "NCIS" was not listed in the iTunes Music Store as of press time.