There are a lot of Kristen caps here, thought this would be helpful. If I've missed any or if more are added, please comment so I can add them here!

Movies
link (as Mary Lane, 2005)
link (as Sarah Marshall, 2008) (extras: link)
link (as Zoe, 2008) (extras: link, link)
link (as Beth, 2009) (extras: link)
link (as Marni Olsen, 2010)

TV
link (episode 1x07, Bullock Returns to Camp)

Talk Shows
link - April 12, 2005
link - November 14, 2005
link - November 28, 2005
link - July 27, 2006
link - February 4, 2008
link - April 15, 2008
link - April 16, 2008
link - October 7, 2009
link - October 10, 2009
link - October 15, 2009
link - January 27, 2010