I'm sure everyone who will understand this has heard it a million times, but I just couldn't resist. :-}

better !pout !cry
better watchout
lpr why
santa claus >town

cat /etc/passwd >list
ncheck list
ncheck list
cat list | grep naughty >nogiftlist
cat list | grep nice >giftlist
santa claus >town

who | grep sleeping
who | grep awake
who | egrep 'bad|good'
for (goodness sake)
{
be good
}