From The TV IV

Season Thirteen of King of the Hill premiered on September 28, 2008. At the end of the 2008-09 season, six episodes were still unaired, and the network stated that the remaining six would be held for syndication run. However - eventually the first and last of these six episodes aired back-to-back on FOX in September 2009, as a one-hour series finale.

[edit] Episodes

#	#	Title	Airdate
236	1	Dia-Bill-ic Shock	September 28, 2008
237	2	Earthly Girls Are Easy	October 5, 2008
238	3	Square-Footed Monster	October 19, 2008
239	4	Lost in Myspace	November 2, 2008
240	5	No Bobby Left Behind	November 9, 2008
241	6	A Bill Full of Dollars	November 16, 2008
242	7	Straight as an Arrow	November 30, 2008
243	8	Lucky See, Monkey Do	February 8, 2009
244	9	What Happens at the National Propane Gas Convention in Memphis Stays at the National Propane Gas Convention in Memphis	February 15, 2009
245	10	Master of Puppets	March 1, 2009
246	11	Bwah My Nose	March 8, 2009
247	12	Uncool Customer	March 15, 2009
248	13	Nancy Does Dallas	March 22, 2009
249	14	Born Again on the Fourth of July	April 19, 2009
250	15	Serves Me Right for Giving General George S. Patton the Bathroom Key	April 26, 2009
251	16	Bad News Bill	May 3, 2009
252	17	Manger Baby Einstein	May 10, 2009
253	18	Uh-Oh Canada	May 17, 2009
254	19	The Boy Can't Help It	September 13, 2009
255	20	The Honeymooners	unaired
256	21	Bill Gathers Moss	unaired
257	22	When Joseph Met Lori, and Made Out with Her in the Janitor's Closet	unaired
258	23	Just Another Manic Kahn-Day	unaired
259	24	To Sirloin With Love	September 13, 2009