NBC announced its 2009-2010 schedule on Monday, and fans of the Peacock Network will have the premieres of four new dramas and two new comedies to look forward this fall.

In the new drama department, NBC will welcome Trauma, Parenthood, Mercy, and the event series Day One. New comedies joining the NBC roster include Community and 100 Questions.

Returning series that received a pickup included Heroes, Southland, Parks and Recreation, as well as six new episodes of Saturday Night Live Weekend Update Thursday. These hits join the previously announced The Office, 30 Rock, The Biggest Loser, The Celebrity Apprentice, Law & Order: Special Victims Unit, Friday Night Lights, and new alternative series The Marriage Ref, Breakthrough With Tony Robbins, and Who Do You Think You Are?

The Jay Leno Show will be broadcast Monday-Fridays, 10-11 p.m. ET beginning in the fall.

Several series are still on the cusp, like the fan favorite Chuck, veteran crime drama Law & Order, Patricia Arquette’s supernatural series Medium, and My Name Is Earl.

According to The Hollywood Reporter, both shows are likely to return. Additional series pickups will be announced on May 19, when it holds a comedy event for advertisers.

“We are thrilled to be announcing such an awesome slate of new series that build on our existing quality brand and deliver emotional, human stories,” said Ben Silverman, co-chairman, NBC Entertainment and Universal Media Studios. “NBC will strive to make viewers feel and our shows represent the full range of human emotion from laughter to tears. We can’t wait to share these concepts with our audience and our advertising partners.”