Sure by now, many .NET developers would be aware that Silverlight is a hot technology for Web (and of course WP7) development, and that many people are today considering it as one of the alternatives to even ASP.NET. But here, in India, the visibility of Silverlight in companies or products is not as high as say in US or Europe. But I'd already some big names quite some back in an earlier blog post. Apart from Yahoo Japan, Continental Airlines, Indian IPL and few others, here are some relatively less known companies/projects that are making real use of Silverlight for real world tasks:
http://www.archetype-inc.com/about.html
http://www.isidor.de/
http://www.hotelcandelaria.pt/
http://www.msstudentlounge.com/ (surprisingly this one is by Microsoft, yet I'd never heard about this site till today!)
http://bestsilverlightsite.com/services (company name is Nardon Design)
http://quince.infragistics.com/
Have you come across any good ones? Please share in the comments section.