Integrate Stack Overflow into IDEs?

Okay, this is just a crazy idea I have. Stack Overflow looks very structured and integrable into development applications. So would it be possible, even useful, to have a Stack Overflow plugin for, say, Eclipse?

Which features of Stack Overflow would you like to have directly integrated into your IDE so you can use it "natively" without changing to a browser?

EDIT: I'm thinking about ways of deeper integration than just using the web page inside the IDE. Like when you use a certain Java class and have a problem, answers from SO might flare up. There would probably be cases where something like this is annoying, but others may be very helpful.

Following up on Josh's answer. This VS Macro will search StackOverflow for highlighted text in the Visual Studio IDE. Just highlight and press Alt+F1.

Public Sub SearchStackOverflowForSelectedText()
    Dim s As String = ActiveWindowSelection().Trim()
    If s.Length > 0 Then
        DTE.ItemOperations.Navigate("http://www.stackoverflow.com/search?q=" & _
            Web.HttpUtility.UrlEncode(s))
    End If
End Sub

Private Function ActiveWindowSelection() As String
    If DTE.ActiveWindow.ObjectKind = EnvDTE.Constants.vsWindowKindOutput Then
        Return OutputWindowSelection()
    End If
    If DTE.ActiveWindow.ObjectKind = "{57312C73-6202-49E9-B1E1-40EA1A6DC1F6}" Then
        Return HTMLEditorSelection()
    End If
    Return SelectionText(DTE.ActiveWindow.Selection)
End Function

Private Function HTMLEditorSelection() As String
    Dim hw As HTMLWindow = ActiveDocument.ActiveWindow.Object
    Dim tw As TextWindow = hw.CurrentTabObject
    Return SelectionText(tw.Selection)
End Function

Private Function OutputWindowSelection() As String
    Dim w As Window = DTE.Windows.Item(EnvDTE.Constants.vsWindowKindOutput)
    Dim ow As OutputWindow = w.Object
    Dim owp As OutputWindowPane = ow.OutputWindowPanes.Item(ow.ActivePane.Name)
    Return SelectionText(owp.TextDocument.Selection)
End Function

Private Function SelectionText(ByVal sel As EnvDTE.TextSelection) As String
    If sel Is Nothing Then
        Return ""
    End If
    If sel.Text.Length = 0 Then
        SelectWord(sel)
    End If
    If sel.Text.Length <= 2 Then
        Return ""
    End If
    Return sel.Text
End Function

Private Sub SelectWord(ByVal sel As EnvDTE.TextSelection)
    Dim leftPos As Integer
    Dim line As Integer
    Dim pt As EnvDTE.EditPoint = sel.ActivePoint.CreateEditPoint()

    sel.WordLeft(True, 1)
    line = sel.TextRanges.Item(1).StartPoint.Line
    leftPos = sel.TextRanges.Item(1).StartPoint.LineCharOffset
    pt.MoveToLineAndOffset(line, leftPos)
    sel.MoveToPoint(pt)
    sel.WordRight(True, 1)
End Sub

To install:

1. go to Tools - Macros - IDE
2. create a new Module with a name of your choice under "MyMacros". Or use an existing module.
3. paste the above code into the module
4. add a reference to the System.Web namespace (for HttpUtility) to the module
5. close the macro IDE window
6. go to Tools - Options - Environment - Keyboard
7. type "google" in the Show Commands Containing textbox. The SearchGoogleForSelectedText macro should show up
8. click in the Press Shortcut Keys textbox, then press Alt+F1
9. click the Assign button
10. click OK

This is all taken from Jeff Atwood's Google Search VS Macro post, just modified to search StackOverflow instead.