A jikoshoukai speech generally contains the following information:
Greeting (e.g., Hello/Good afternoon, etc.)
Another greeting (e.g., Nice to meet you.)
A superficial fact or two about yourself
A nicety (e.g., I'm reallly excited to work with you, etc.)
A closing nicety (e.g., yoroshiku)
If you're thinking, wow, for a self-introduction speech, that seems really short, canned and impersonal, that's because jikoshoukai are generally short, canned and impersonal by Western standards. In Japan, just as everywhere else in the world, it's sometimes more important to go through the motions of saying something at all than how personal or meaningful it actually is.
So when you meet new groups in Japan, it's important to give an official jikoshoukai, even though nobody actually expects to learn much from it. And when someone sneezes in the US, it's important to say "Bless you" or "Gesundheit," even though most people don't have any idea why. But just as in the US, when you don't say Gesundheit, if you don't give a jikoshoukai at all, you risk making someone think you're a bit of a jerk.
The samples on this website differ from one another in level of politeness and difficulty. They are labeled as being either for students or for colleagues. But as there are English translations for all of the speeches, you can edit the speeches to fit almost any situation in which you may have to give a jikoshoukai.
To view the samples, just click on the "Subpages" below, or on the links in the "Navigation" menu on the left.