Node console.log truncates output by default. How can I see the full output?

Node's console.log seems to truncate output by default, eg, looking at the output from an API:

{ '@': { xmlns: 'http://ec2.amazonaws.com/doc/2012-03-01/' },
   requestId: '123456',
   reservationSet: 
   { item: 
      { reservationId: 'r-123456',
       ownerId: '123456',
       groupSet: [Object],
       instancesSet: [Object],
       requesterId: '123456' } } }

As you can see, [object] isn't expanded. I guess this is a convenience measure - a lot of people wouldn't want node spewing thousands of lines by default. Is there a way I can tell it to expand the logged item's contents?