Have a blank wall (and access to your company's color printer)? There are plenty of technology posters and charts for developers available on MSDN. I didn't realize just how many until I searched for "poster" on MSDN downloads.
Here's a list of the more recent ones:
- .NET 3.5 Namespaces Poster
The .NET Framework 3.5 Common Namespaces and Types Poster
- Exchange Component Architecture Poster
This poster highlights the architecture and feature set of Microsoft Exchange Server 2007.
- Visual Basic 2008 Keybinding Poster
Printable wall poster containing list of useful keyboard shortcuts for Visual Basic 2008 developers
- Visual C++ 2008 Keybinding Poster
List of keybindings for Visual C++ language within Visual Studio and Visual C++ Express 2008
- Visual C# 2008 Poster
Wall chart showing useful keyboard shortcuts for Visual C# programming language