Today I talked with Glen Huey, senior editor at Popular Woodworking magazine, regarding his video: Drilling Workbench Dog Holes. Glen confirmed the bit he used in the video was an Onsrud bit supplied by Woodcraft:
Onsrud HSS Bit, 3/4" Cutting Dia., 3-1/4" Overall Length, 1-1/4" Cutting Length, 1/2" Shank #03K53 Price:$37.99 http://www.woodcraft.com/family.aspx?FamilyID=1396
Prior to calling Glen, this was the only bit I could find that would fit a ½” collet with a ¾” cutting diameter. I thought the HSS (high-speed steel) might dull quickly and started looking for a carbide bit. I contacted all of the major bit manufactures, including the Onsrund technical support staff, and they shared my reservations about HSS holding up in this application. After my conversation with Glen, watching the video, and learning that he was drilling into 4/4 Tiger/Curley maple; I ordered the bit from Woodcraft.
Thanks for your help, Glen (and thanks to Jim Becker for helping me to submit my first post)