From the DotList website:

Features

• Command-line interpreter with Read-Eval-Print Loop
• Embeddable Interpreter object in a DLL assembly
• Lexically scoped, Lisp-1
• &key, &opt and &rest parameters
• CL-style Macros
• Generic functions (single and binary dispatch)
• .Net type system (strings, ints, floats, bools, chars, arrays etc are the .Net System types, no conversions/mapping)
• Transparent access to the .Net framework - simple syntax for constructor and method invocation and property access

This could be interesting. Especially the embeddable interpreter. I know Lisp has been used as a scripting language in the past. It could be an interesting choice for .NET applications.