No need to import rfc822.  (Andrew Dalke & kjpylint)
diff --git a/Lib/BaseHTTPServer.py b/Lib/BaseHTTPServer.py
index 4c9645d..e496d67 100644
--- a/Lib/BaseHTTPServer.py
+++ b/Lib/BaseHTTPServer.py
@@ -68,7 +68,6 @@
 import time
 import socket # For gethostbyaddr()
 import string
-import rfc822
 import mimetools
 import SocketServer