C#
C# is my preferred language. There are a few newer aspects of the language that I am not a fan of and some other things that I feel Java does better but at its core I think C# is a very nice language. At Janus I designed and implemented a configuration system for a network based video distrupution system called Just Add Power. This configuration system configures switch VLANs, IP addresses, and Just Add Power devices to allow them to work together as a single system. Setups can involve up to 16 switches and 100s of Just Add Power devices.