Columns: No. in series | No. in season | Title | Director | Writer(s) | Original air date | Production code | U.S. viewers (million)
65 | 1 | " Do I Know You? " | Pamela Fryman | Carter Bays & Craig Thomas | September22,2008 | 4ALH01 | 9.79 | 66 | 2 | " The Best Burger in New York " | Pamela Fryman | Carter Bays & Craig Thomas | September29,2008 | 4ALH02 | 8.72 | 67 | 3 | " I Heart NJ " | Pamela Fryman | Greg Malins | October6,2008 | 4ALH04 | 8.97 | 68 | 4 | " Intervention " | Michael Shea | Stephen Lloyd | October13,2008 | 4ALH03 | 9.25 | 69 | 5 | " Shelter Island " | Pamela Fryman | Chris Harris | October20,2008 | 4ALH05 | 9.45 | 70 | 6 | " Happily Ever After " | Pamela Fryman | Jamie Rhonheimer | November3,2008 | 4ALH06 | 9.40 | 71 | 7 | " Not a Father's Day " | Pamela Fryman | Robia Rashid | November10,2008 | 4ALH07 | 9.79 | 72 | 8 | " Woooo! " | Pamela Fryman | Carter Bays & Craig Thomas | November17,2008 | 4ALH09 | 9.99 | 73 | 9 | " The Naked Man " | Pamela Fryman | Joe Kelly | November24,2008 | 4ALH08 | 10.04 | 74 | 10 | " The Fight " | Pamela Fryman | Theresa Mulligan Rosenthal | December8,2008 | 4ALH10 | 10.49 | 75 | 11 | " Little Minnesota " | Pamela Fryman | Chuck Tatham | December15,2008 | 4ALH12 | 11.44 | 76 | 12 | " Benefits " | Pamela Fryman | Kourtney Kang | January12,2009 | 4ALH11 | 11.76 | 77 | 13 | " Three Days of Snow " | Pamela Fryman | Matt Kuhn | January19,2009 | 4ALH13 | 10.69 | 78 | 14 | " The Possimpible " | Pamela Fryman | Jonathan Groff | February2,2009 | 4ALH14 | 10.30 | 79 | 15 | " The Stinsons " | Pamela Fryman | Carter Bays & Craig Thomas | March2,2009 | 4ALH15 | 11.08 | 80 | 16 | " Sorry, Bro " | Pamela Fryman | Craig Gerard & Matthew Zinman | March9,2009 | 4ALH16 | 8.51 | 81 | 17 | " The Front Porch " | Rob Greenberg | Chris Harris | March16,2009 | 4ALH17 | 9.29 | 82 | 18 | " Old King Clancy " | Pamela Fryman | Jamie Rhonheimer | March23,2009 | 4ALH19 | 7.36 | 83 | 19 | " Murtaugh " | Pamela Fryman | Joe Kelly | March30,2009 | 4ALH18 | 9.20 | 84 | 20 | " Mosbius Designs " | Pamela Fryman | Kourtney Kang | April13,2009 | 4ALH20 | 9.56 | 85 | 21 | " The Three Days Rule " | Pamela Fryman | Greg Malins | April27,2009 | 4ALH22 | 8.87 | 86 | 22 | " Right Place, Right Time " | Pamela Fryman | Stephen Lloyd | May4,2009 | 4ALH21 | 8.89 | 87 | 23 | " As Fast as She Can " | Pamela Fryman | Carter Bays & Craig Thomas | May11,2009 | 4ALH23 | 8.70