Baseball and NCAA Football appear on US Xbox Live Marketplace.

While we wait to see if any more demos will arrive as part of Microsoft's E3 2007 Bringing it Home campaign, two demos have been hiding on the US Marketplace. A demo for EA's NCAA Football 08 has been available for a few days now and weighs in at 684 MB.

2K Sports' The Bigs is also available to try out, but this is a substantially larger 900 MB. The arcade-style baseball game features larger than life ball parks, heroic gameplay and incredible player models.

Both these demos are only available on the US Xbox Live Marketplace, but if you're keen to get hold of them they can be accessed by a free US Xbox Live Silver account.