It has not been too bad. Sometimes they ask for ID (driver license) which they never really did before 9/11. Short of that, same old thing. The longest wait I've had since 9/11 was about 35 minutes on Peace bridge coming back into Buffalo, and I think that was due to an evening shift change. Might want to bring a photocopy of your birth certificate just in case although they have not asked me for it.
-Weave-