May be it is me but I see a lot of instances of
cbq in the second example at
http://www.openbsd.dk/faq/pf/queueing.html#example2.
I never use queueing myself, so I don't have any examples. When my daughter was still living home once in a while I used YBQ, "Yell Based Queueing" : hey, are you downloading something, cannot you wait until I watch the news and Nova at 10:00 hrs?!"