Question: In 2006, Keith Slettedahl appeared in an episode of "How I Met Your Mother" that originally aired on which date ?

Context paragraphs:
Get Away From My Mom: "Get Away From My Mom" is the pilot episode of the American animated sitcom "Home Movies."  It originally aired on the UPN network in the United States on April 26, 1999.  In the episode, eight-year-old Brendon Small discovers that his mother, Paula, is set to have a date with Brendon's soccer coach, the lazy, profane alcoholic John McGuirk.  Brendon resents McGuirk for this and expresses his outrage throughout the episode.  The date goes terribly and McGuirk and Paula decide to not pursue a relationship.  Meanwhile, Brendon and his friends Melissa and Jason film a new movie about a rogue police officer.

Single Stamina: "Single Stamina" is the tenth episode in the second season of the television series "How I Met Your Mother".  It originally aired on November 27, 2006.  The episode was nominated for the GLAAD Media Award for Outstanding Individual Episode.

Slap Bet: "Slap Bet" is the ninth episode in season 2 of the popular sitcom "How I Met Your Mother".  The episode, originally titled "Robin Sparkles", first aired on November 20, 2006.  The episode received highly positive reviews and features in several lists of the best "How I Met Your Mother" episodes in the series.  The episode led to two recurring jokes and storylines in the show: "Robin Sparkles", Robin's teenage pop star career, and the Slap Bet, in which Marshall slapped Barney at various points throughout the series.

Ten Sessions: "Ten Sessions" is the 13th episode of the third season of "How I Met Your Mother", and the 57th episode overall of the series.  It originally aired on March 24, 2008 on CBS.  The episode was written by series co-creators Carter Bays and Craig Thomas, and directed by Pamela Fryman.  In the episode, Ted is repeatedly rejected by his dermatologist Stella for a date, so Stella's receptionist, Abby, becomes interested in him.

The Pineapple Incident: "The Pineapple Incident" is the tenth episode in the first season of the television series "How I Met Your Mother".  It originally aired on November 28, 2005.  It is the highest viewed episode in season 1 and the second highest overall episode during the nine seasons of "How I Met Your Mother".  It is widely considered of the best episodes in the entire series.

Keith Slettedahl: Keith Konrad Slettedahl (born August 9, 1973) is an American musician.  He is the singer and songwriter for Los Angeles pop rock group The 88.  In 2006, he appeared in the episode "Best Prom Ever" on the sitcom "How I Met Your Mother", playing a gig with his band on a High School-Prom.

Double Date (How I Met Your Mother): "Double Date" is the second episode of the fifth season of the sitcom "How I Met Your Mother", and the 90th episode overall.  It originally aired on September 28, 2009.

Best Prom Ever: "Best Prom Ever" is the 20th episode in the first season of the television series "How I Met Your Mother".  It originally aired in the United States on May 1, 2006.  It had the lowest recorded viewership for season 1 (7.24 million).

Blind Date (30 Rock): "Blind Date" is the third episode of the first season of the American television comedy series "30 Rock".  It was written by co-executive producer John Riggi and directed by Adam Bernstein.  The episode originally aired on the National Broadcasting Company (NBC) in the United States on October 25, 2006.  Guest stars in this episode include Brett Baer, Katrina Bowden, Kevin Brown, Grizz Chapman, John Lutz, Stephanie March, Maulik Pancholy, Keith Powell, and Lonny Ross.

How I Wet Your Mother: "How I Wet Your Mother" is the sixteenth episode of "The Simpsons"<nowiki>'</nowiki> twenty-third season.  It originally aired on the Fox network in the United States on March 11, 2012.  In the episode, a traumatic incident causes Homer to repeatedly wet the bed.  As it worsens, his family, with the help of Professor Frink, successfully manage to infiltrate his dreams to get to its subconscious source.  The episode name is a pun on "How I Met Your Mother".

Supporting paragraphs: Keith Slettedahl Best Prom Ever
Answer: May 1, 2006