Many have noted a new switch ad that appeared on Apple's site this past week... Bill Swan - a dad.
Meanwhile, users noted that cellist Yo-Yo Ma was featured in a Apple Switch ad that aired last night on NBC's West Wing. This ad is now available on Apple's site.
Finally, Apple Iceland is joining in with an ad featuring Einar Orn of the Sugar Cubes (music band). (Update: translation provided in comments)
Celebrity switch ads where launched in early October from Apple. Further celebrities ads are expected.