I'm a Beta Man! :)
Laptop:
IM: Windows Live Messenger;
e-mail (web interface): Windows Live Mail;
Antispyware: Microsoft Windows Defender;
Antivirus: Microsoft Windows OneCare Live;
Browser: Windows Internet Explorer 7;
Office: Microsoft Office 2007;
Console: Microsoft "Monad" Shell;
Image Editor: Microsoft Expression Graphic Designer;
SDKs: Microsoft DirectX 10, Windows Presentation Foundation etc.;
OS: Windows Vista,
installed on VMware Server Beta 's virtual machine.
Servers:
Web site: IIS7 on Windows Server codename "Longhorn";
Teamwork: Windows SharePoint Services 3 and Visual Studio Team Foundation Server on (released) Windows Server 2003 R2,
installed as (released) Microsoft Virtual Server 2005 R2 virtual machine's OS.