'Tis the season for season finales, which can be a confusing time for your jam-packed DVR. With a slew of different time slots and scheduling conflicts, you'll want to make extra certain you don't miss any of your favorite shows' big finales. Don't worry, we've got your back. Click through this slideshow to plan your viewing with our comprehensive guide to the upcoming TV finales.Friday, May, 2, 2008, 6:2 PM

"Are You Smarter Than a 5th Grader?" second season finale airs Thursday, 5/15 at 8pm ET on Fox.FOX/Michael Yarish - Friday, May, 2, 2008, 6:2 PM

"My Name is Earl" third season finale airs Thursday, 5/15 at 8pm ET on NBC.NBC/Mitchell Haaseth - Friday, May, 2, 2008, 6:2 PM

"Smallville" seventh season finale airs Thursday, 5/15 at 8pm ET on The CW.The CW/Lorenzo Agius - Friday, May, 2, 2008, 6:2 PM

"CSI" eighth season finale airs Thursday, 5/15 at 9pm ET on CBS.CBS/Robert Voets - Friday, May, 2, 2008, 6:2 PM

"Don't Forget the Lyrics" first season finale airs Thursday, 5/15 at 9pm ET on Fox. FOX/Greg Gayne - Friday, May, 2, 2008, 6:2 PM

"The Office" fourth season finale airs Thursday, 5/15 at 9pm ET on NBC.NBC/Mitchell Haaseth - Friday, May, 2, 2008, 6:2 PM

"Supernatrual" third season finale airs Thursday, 5/15 at 9pm ET on The CW.The CW/Michael Muller - Friday, May, 2, 2008, 6:2 PM

"Without a Trace" sixth season finale airs Thursday, 5/15 at 10pm ET on CBS.CBS - Friday, May, 2, 2008, 6:2 PM

"ER" fourteenth season finale airs Thursday, 5/15 at 10pm ET on NBC.NBC/Brian Bowen Smith - Friday, May, 2, 2008, 6:2 PM

"Lil' Bush" second season finale airs Thursday, 5/15 at 10:30pm on Comedy Central.Comedy Central - Friday, May, 2, 2008, 6:2 PM

"Ghost Whisperer" third season finale airs Friday, 5/16 at 8pm ET on CBS.CBS/Robert Voets - Friday, May, 2, 2008, 6:2 PM

"Moonlight" first season finale airs Friday, 5/16 at 9pm ET on CBS.CBS/Monty Brinton - Friday, May, 2, 2008, 6:2 PM

"Numb3rs" fourth season finale airs Friday, 5/16 at 10pm ET on CBS.CBS/Monty Brinton - Friday, May, 2, 2008, 6:2 PM

"Extreme Makeover: Home Edition" fifth season finale airs Sunday, 5/18 at 7pm ET on ABC.ABC/Bob D'Amico - Friday, May, 2, 2008, 6:2 PM

"Everybody Hates Chris" third season finale airs Sunday, 5/18 at 8pm ET on The CW.The CW/Michael Muller - Friday, May, 2, 2008, 6:2 PM

"The Simpsons" nineteenth season finale airs Sunday, 5/18 at 8pm ET on Fox.FOX/Matt Groening - Friday, May, 2, 2008, 6:2 PM

"Aliens in America" first season finale airs Sunday, 5/18 at 8:30pm ET on The CW.The CW/Kharen Hill - Friday, May, 2, 2008, 6:2 PM

"King of the Hill" twelfth season finale airs Sunday, 5/18 at 8:30pm ET on Fox.FOX - Friday, May, 2, 2008, 6:2 PM

"Desperate Housewives" fourth season finale airs Sunday, 5/18 at 9pm ET on ABC.ABC/Andrew Eccles - Friday, May, 2, 2008, 6:2 PM

"The Game" second season finale airs Sunday, 5/18 at 9pm ET on The CW.The CW/Matthias Clamer - Friday, May, 2, 2008, 6:2 PM

"American Dad" third season finale airs Sunday, 5/18 at 9:30pm ET on Fox.FOX - Friday, May, 2, 2008, 6:2 PM

"Keeping up with the Kardashians" second season finale airs Sunday, 5/18 at 10pm on E!.E! Networks - Friday, May, 2, 2008, 6:2 PM

"The Big Bang Theory" first season finale airs Monday, 5/19 at 8pm ET on CBS.CBS - Friday, May, 2, 2008, 6:2 PM