Pub quizzes are OK, but as TMH says, can be a waste of valued drinking time. They're best held on Sundays, when everyone's still dead from the day before or skint.
A few friends and I used to do one in Exeter on Monday nights, purely a music quiz and it was the usual beer for coming first, plus there were at least 8 one-off questions to which the first person delivering the correct answer to the quizmaster got a free pint... sometimes they were very cheap nights out. For about 3 months, there was only ever two teams that won, us and this other lot, sadly it got stopped though. Whether it was because the same people were always winning... spoilsports.
In general quizzes though, always seem to come about 2nd last, but it's harmless enough fun.