Here's an all purpose shop gadget that I didn't think Norm had featured before. It's a push stick, height gauge, protractor, straight edge, ruler, and a few other things. Shown in the Table Saw 101 series, it'll be interesting to see if it shows up some more.
Update: well, in the process of my April, 2007, run-through of the episodes, I found it featured as early as Season Three, Episode 307 (Harvest Table).
Appearances: Episodes 307, 608, 702, 1909
Last updated: 21 April 2007