Not to do...
Jill linked to this page, and I have to admit, I almost failed to see the humour, as I have done quite a few of them during similar situations:

1."Ladies and Gentlemen, please rise for the singing of our National Anthem." - well, not for the anthem, but they all rise for the candidate!
4.Describe parts of your thesis using interpretive dance. - Not dance, exactly, but how about a swordfight?
11.Have bodyguards outside the room to "discourage" certain professors from sitting in. - Oh yes, and they were in the auditorium too, ready to jump in and attack in case of an unpleasant question.
37.Fashion show. - Isn't that what is is, really? At least with us vain Norwegian female scholars.
44.Black tie only.
49.Defense by proxy. - the opposition were so kind, that is how it felt!
56.Do a "show and tell".
57.Food fight. - see swordfight
58.Challenge a professor to a duel. Slapping him with a glove is optional. - that's what it is all about!
112.Invite the homeless. - EVERYBODY were invited

And this is something I should have thought of:
138.Have everyone bring wine glasses. When they clink the glasses with a spoon, you have to kiss your thesis. Or your advisor.