Stand-up comedy, in Dutch and sometimes also in English.
The website is unfortunately only in Dutch.
Sometimes an evening is all in English, which you can tell from the text in the Agenda on the website, so the best thing would be to scroll through the Agenda, and look for names that sound as if they might not be Dutch-speaking (sorry, it doesn't get easier than that).

Address:
IJdok 89, Amsterdam
Web:
http://www.comedycafe.nl

Tickets:
Buying on the website is possible, but in Dutch only. You can also call the phone number on the website, to make a reservation (and pay at the theatre), or make a reservation by e-mail. See the contact page on the website.