Last night on Chelsea Lately, Rosario Dawson, who, by the way, is an unabashed planking fan, devises a miniature amusement park of sex organs for the upcoming Burning Man — a penis slide that swoops you right into a cool, misting vagina. Plus: An Internet-fearing Lisa Kudrow of Web Therapy confronts Jay Leno on her most-frequently-asked question and the subject of his old monologues — her purported virginity at marriage; and a very bubbly Ellie Kemper of The Office and Craig Ferguson have an impromptu and high-pitched jam session about e-mails. Watch our compilation to see what you missed.