VIDEO: 'Robin Sparkles' Returns on HOW I MET YOUR MOTHER's Canadian Special, 2/4

How I Met Your Mother is gearing up for its special 'Canadian' episode, set to air on Feb. 4. Today, the network announced a slew of guest stars, including Alan Thicke, Alex Trebek, and the return of the infamous Robin Sparkles! Check out the announcement video!

'Robin Sparkles' is the former teen Canadian superstar alter-ego of Robin Scherbatsky (Cobie Smulders) - the singer of such HIMYM hits as 'Let's Go to the Mall' and 'Sandcastles in the Sand.'

How I Met Your Mother is a comedy about Ted and how he fell in love. It all started when Ted's best friend, aspiring environmental lawyer Marshall, proposed to his college sweetheart, Lily, a kindergarten teacher. Now that the two have had a baby, Ted realizes that he had better get a move on it if he too hopes to find true love. Helping him in his quest to find his future wife is Barney, a friend with endless, sometimes outrageous opinions, a penchant for suits and a foolproof way to meet women. When Ted meets Robin, he's sure it's love at first sight, but after a whirlwind romance with her, he realizes destiny has something else in store for him. The series is narrated through flashbacks from the future.