Starbucks

Few retailers can boast the kind of complete experiential presence that Starbucks creates for millions of customers every day. On the other hand, Starbucks.com is a sprawling presence that diffuses the in-person experience. Clicking through the site stands in stark contrast to the tangible sights, sounds and smells that make people's local Starbucks so addictive (beyond the caffeine).
While you can't translate the smell of a Starbucks onto the desktop, using a desktop widget could help re-create many of the visual and auditory facets that make the brand such a desired destination.
Sound is a huge part of the Starbucks experience. Aside from the in-store music design, there's a whole Starbucks range of music to be purchased. Yet bringing this to a web environment could create more problems than it solves.
On the desktop, however, brands can stream music live. This means that people could sit down at their computers in the morning with their cups of Starbucks, press play and keep the feeling of the brand in the background all day.
For the brand, the benefits of streaming its music feed through a desktop application go beyond mere music. The in-store music is already licensed for streaming, so why not increase the efficiency of the purchase by allowing users to pipe it to their desktops? And making a jukebox available is also a great way to let people get used to listening to a brand's exclusive tracks all day. As soon as they've listened enough to pull the trigger on a purchase, they're only one click away. If that level of convenience doesn't do the trick, there's always the auditory reminder of the person's next visit to the physical locale.
In terms of the visuals, desktop applications allow brands like Starbucks to deliver complete desktop themes that are promotions in-and-of themselves. One click from the desktop application can lead to the PC equivalent of retail design. For brand fans, it's an easy way to showcase their affinity for the brand as a personality differentiator among their peers.