As far as my wife's appearance on TPIR (making it down to Contestant's Row for the last IUFB), I can say I see it about once a year, as it is a part of our wedding DVD -- the portion of the video which shows photos of our honeymoon trip...and her appearance during the trip.
As far as my 2 other appearances on TPIR in the audience, I only watch it if I randomly put it in the ol' VCR, as I have yet to convert it to digital, and I couldn't even tell you which tapes they are on.