Columns: No. in series | No. in season | Title | Directed by | Written by | U.S. viewers (million) | Original air date | Production code
59 | 1 | " Season 4 " | Don Scardino | Tina Fey | 6.39 | October 15, 2009 | 401 | 60 | 2 | " Into the Crevasse " | Beth McCarthy Miller | Robert Carlock | 6.68 | October 22, 2009 | 402 | 61 | 3 | " Stone Mountain " | Don Scardino | John Riggi | 6.01 | October 29, 2009 | 403 | 62 | 4 | " Audition Day " | Beth McCarthy Miller | Matt Hubbard | 6.15 | November 5, 2009 | 404 | 63 | 5 | " The Problem Solvers " | John Riggi | Ron Weiner | 6.00 | November 12, 2009 | 405 | 64 | 6 | " Sun Tea " | Gail Mancuso | Josh Siegal & Dylan Morgan | 5.72 | November 19, 2009 | 406 | 65 | 7 | " Dealbreakers Talk Show #0001 " | Don Scardino | Kay Cannon | 6.08 | December 3, 2009 | 407 | 66 | 8 | " Secret Santa " | Beth McCarthy Miller | Tina Fey | 6.70 | December 10, 2009 | 408 | 67 | 9 | " Klaus and Greta " | Gail Mancuso | Robert Carlock | 5.12 | January 14, 2010 | 409 | 68 | 10 | " Black Light Attack! " | Don Scardino | Steve Hely | 5.01 | January 14, 2010 | 410 | 69 | 11 | " Winter Madness " | Beth McCarthy Miller | Vali Chandrasekaran & Tom Ceraulo | 5.58 | January 21, 2010 | 411 | 70 | 12 | " Verna " | Don Scardino | Ron Weiner | 5.79 | February 4, 2010 | 412 | 71 | 13 | " Anna Howard Shaw Day " | Ken Whittingham | Matt Hubbard | 6.00 | February 11, 2010 | 413 | 72 | 14 | " Future Husband " | Don Scardino | Tracey Wigfield & Jon Haller | 5.89 | March 11, 2010 | 414 | 73 | 15 | " Don Geiss, America and Hope " | Stephen Lee Davis | Jack Burditt & Tracey Wigfield | 6.79 | March 18, 2010 | 415 | 74 | 16 | " Floyd " | Millicent Shelton | Paula Pell | 6.25 | March 25, 2010 | 416 | 75 | 17 | " Lee Marvin vs. Derek Jeter " | Don Scardino | Kay Cannon & Tina Fey | 4.00 | April 22, 2010 | 417 | 76 | 18 | " Khonani " | Beth McCarthy Miller | Vali Chandrasekaran | 5.16 | April 22, 2010 | 418 | 77 | 19 | " Argus " | Jeff Richmond | Josh Siegal, Dylan Morgan & Paula Pell | 5.44 | April 29, 2010 | 419 | 78 | 20 | " The Moms " | John Riggi | Kay Cannon & Robert Carlock | 5.42 | May 6, 2010 | 420 | 79 | 21 | " Emanuelle Goes to Dinosaur Land " | Beth McCarthy Miller | Matt Hubbard | 4.96 | May 13, 2010 | 421