"On the Friday before MIX, I recorded this podcast with John Lam. He’s the creator of RubyCLR and, as it happens, he joined Microsoft on the same day I did. John’s been running silent since then, but no longer. In this conversation we discuss the dynamic language runtime (DLR), a generalization of Jim Hugunin’s work on IronPython, and a quartet of languages that make use of its services. They include a refactored IronPython, a new managed implementation of JavaScript, Visual Basic, and a new implementation of Ruby which, unlike RubyCLR, does not rely on the C-based Ruby runtime." (Jon Udell)