The 74th annual Official Houdini Seance was held at the Humphrey Scottish Rite Masonic Center in Milwaukee, Wisconsin on Halloween 2000. The event was recorded and released as part of a documentary, Waiting For Houdini. I recently found it on YouTube (misidentified as the 2001 seance), and it's definitely worth watching.
The seance is fascinating as the medium, Rev. Pamla Ashlay, communicates directly with Houdini for some time (you can be the judge of whether she really made contact). Intercut with the seance are interviews with Sidney Radner and Dr. Morris Young. These are a must watch. Sid shows handcuffs and talks at length about his times with Hardeen, even admitting that he passed on acquiring Houdini's diving suit. Dr. Young tells of meeting Houdini himself in September 1926 when he was only 17. I'm sorry to have never met Dr. Young, who passed away in 2002 at age 93. He seems like a very kind man with genuine love for Houdini, and how I would have loved to have heard more about that meeting!
Below is the full documentary. Production values are a little homespun, but there is gold here. Enjoy.
No word yet on the location for this year's Official Houdini Seance, but I've heard a rumor that it may be in the South.