One of them is CopySourceAsHtml from Colin Coller that does exactly what it says,
it copies the source code with formatting included into the clipboard as HTML so that it can be pasted with full formatting.
I have tested this both in Visual Studio 2005 and 2008 and it is working perfect.
Here are some settings i prefer in order for the output to be perfect.
An example of copy pasting:
string sDirectory = Path.GetDirectoryName(txtFileName.Text);
string sFileName = Path.GetFileName(txtFileName.Text);
string sNewFilePath = txtFileName.Text+"_old";
SqlCeEngine eng = new SqlCeEngine("Data Source=" + sNewFilePath);
eng.Compact("Data Source=" + txtFileName.Text);