I have a table layed out similar to the follownig:

cat1     date1     amount
cat1     date2     amount
cat1     date3     amount
cat1     date4     amount
cat2     date1     amount
cat2     date2     amount
cat3     date1     amount
cat3     date2     amount
cat3     date3     amount

I want to get the oldest 2 dates from each category into a table. I want my table to look like the following:

cat1     date1     amount
cat1     date2     amount
cat2     date1     amount
cat2     date2     amount
cat3     date1     amount
cat3     date2     amount

Any easy way to do this with a select that I am overlooking?