You can check out the long-gestating App store offering applications for the iPod touch and iPhone by clicking here (note that this will launch iTunes, 7.7 or higher required to access the App store).
There is a direct link to iPod touch applications, which will also run on the iPhone but don’t require the iPhone’s cell phone or 3G service. Click here to see this.
Note that you will need to install the iPhone Firmware 2.0 update to install and run these apps on your iPhone (free, to be released shortly), or will need to purchase a separate software update for iPod touch, sold separately for $9.95 and also available shortly. We’ll keep you posted as these become available.