Best single play in Saints' history excluding Porter's pick-6 and Gleason's punt block

I guess in terms of single plays you have to add the lateral play in 2003. The subsequent PAT would rank among all time worst.

That actually entered my mind before the Milne recovery when I was typing up the OP but I had to think it over and opted to penalize that play because it was only a regular season game and I might have let the PAT miss influence my decision despite the fact that that was a separate play altogether.