From Ron DeBruin's site.  I use this all the time.  This is a more reliable way to get the last Row, Column, or cell in a range. using xldown to get to the last row is that with xldown, it will stop at the first blank cell.  .usedrange will catch any ghost formatting that's on the sheet, and can give unpredictable results
Function Last(choice As Long, rng As Range)
'Ron de Bruin, 5 May 2008
' 1 = last row
' 2 = last column
' 3 = last cell
    Dim lrw As Long
    Dim lcol As Long
    Select Case choice
    Case 1:
        On Error Resume Next
        Last = rng.Find(What:="*", _
                        After:=rng.Cells(1), _
                        lookat:=xlPart, _
                        LookIn:=xlFormulas, _
                        SearchOrder:=xlByRows, _
                        SearchDirection:=xlPrevious, _
                        MatchCase:=False).Row
        On Error GoTo 0
    Case 2:
        On Error Resume Next
        Last = rng.Find(What:="*", _
                        After:=rng.Cells(1), _
                        lookat:=xlPart, _
                        LookIn:=xlFormulas, _
                        SearchOrder:=xlByColumns, _
                        SearchDirection:=xlPrevious, _
                        MatchCase:=False).Column
        On Error GoTo 0
    Case 3:
        On Error Resume Next
        lrw = rng.Find(What:="*", _
                       After:=rng.Cells(1), _
                       lookat:=xlPart, _
                       LookIn:=xlFormulas, _
                       SearchOrder:=xlByRows, _
                       SearchDirection:=xlPrevious, _
                       MatchCase:=False).Row
        On Error GoTo 0
        On Error Resume Next
        lcol = rng.Find(What:="*", _
                        After:=rng.Cells(1), _
                        lookat:=xlPart, _
                        LookIn:=xlFormulas, _
                        SearchOrder:=xlByColumns, _
                        SearchDirection:=xlPrevious, _
                        MatchCase:=False).Column
        On Error GoTo 0
        On Error Resume Next
        Last = rng.Parent.Cells(lrw, lcol).Address(False, False)
        If Err.Number > 0 Then
            Last = rng.Cells(1).Address(False, False)
            Err.Clear
        End If
        On Error GoTo 0
    End Select
End Function
Then call it like this:
sub get_the_Last()
dim TheValue as string
dim myRange as range
    set myRange = (assign your range here)
    TheValue = range(Last(3, MyRange)).value 
end sub