New: Series Overview sorted by Next Airing now sorts all remaining items by their Last Aired date.

src/NzbDrone.Core/SeriesStats/SeriesStatistics.cs

@@ -7,6 +7,7 @@ namespace NzbDrone.Core.SeriesStats
     {
         public int SeriesId { get; set; }
         public string NextAiringString { get; set; }
+        public string PreviousAiringString { get; set; }
         public int EpisodeFileCount { get; set; }
         public int EpisodeCount { get; set; }
 
@@ -21,5 +22,17 @@ namespace NzbDrone.Core.SeriesStats
                 return nextAiring;
             }
         }
+
+        public DateTime? PreviousAiring
+        {
+            get
+            {
+                DateTime previousAiring;
+
+                if (!DateTime.TryParse(PreviousAiringString, out previousAiring)) return null;
+
+                return previousAiring;
+            }
+        }
     }
 }