Another good resources site
Great stuff in this list from Reflection It:
DualList Drag & Drop Component User Control Container Web Part Integrate NDoc HTML Help 2 in Visual Studio.NET .NET Quick Reference Card C# HandleWhiteSpace Add-In for Visual Studio.NET LocalizedTextProvider Component C# Minesweeper Game Pocket PC TimeBox Control Improved C# InputBox SQL-strings considered harmful Html2Xml WebService Save your UserSettings in an Isolated Store ASP.NET DataIslandGrid Control Windows Forms AcceptButton Extender Provider NotificationFormTraceListener Assembly C# SortCode Macro for Visual Studio.NET WinForm SplashScreen Simple .NET ReportLibrary WinForm WizardHeader Control for Microsoft.NET Add a Splitter to a WinForm WinForm DualList Component ASP.NET RollOver Images Data Access Layer for SQL Server using Stored Procedures NumberBox ASP.NET control Set the InitialFocus for an ASP.NET WebForm Create Property Macro.