TVLine Items: 'Bonkers' Parks and Rec Finale Buzz, The Voice Enlists Chris Martin and More

The Paley Center For Media's PaleyFest 2014 Honoring "Parks And Recreation"“Bonkers” and “chills” are just two of the words being used by the Parks and Recreation cast to describe the NBC comedy’s Season 6 finale (airing Thursday, April 24) — and it’s anyone’s guess where Season 7 could take us.

RELATED | Parks and Rec Books Michelle Obama for Finale

“The stuff that happens in that last episode is bonkers,” Amy Poehler said at PaleyFest on Tuesday night. “It ends with a lot of change. A lot of change.”

Added Jim O’Heir, “I got chills when we got those final pages.”

Ready for more of today’s newsy nuggets? Well…

* Victor Garber (Alias) has joined the Starz original series Power as recurring character Simon Stern, a renowned club owner and events guru who has the exact successful, legitimate lifestyle James “Ghost” St. Patrick (Omari Hardwick) covets. Sonya Walger (Lost) has also joined as Madeline Stern, Simon’s wife.

* Coldplay frontman Chris Martin will join NBC’s The Voice as its key adviser this season. For the first time in Voice history, the adviser will serve as a mentor to all four teams.

* OWN has cancelled Our America With Lisa Ling after four seasons.

* President Jimmy Carter will stop by the Late Show With David Letterman on Monday (CBS, 11:35/10:35c) to promote his new book A Call to Action: Women, Religion, Violence and Power.

* ABC Family has released the first official promo for its new comedy Mystery Girls, starring 90210‘s Jennie Garth and Tori Spelling. The sitcom premieres June 25: