there are a few of fave moments.
the bit in
feet of clay where Fred bounces off the cow, onto the sheep and then onto the chicken which went mad. and in the same book when he meets up with Mister Vimes and he ducks into a doorway and then promptly ducks straight back out again.
and
feet of clay again, when Mister Vimes was chasing the golem when he slips over, stands up, slips over again, stands up again and then falls down for the thrid time and decides to accept the majority vote and stay down
lords and ladies when the faculty (or part of it) meet Casaunder for the first time.
been an australian i really enjoyed pretty much every bit of
the last continent that had to do with rincewind (TP really nailed the attitude of 'no worries')
and as mentioned above,
where do you stop