Do Android Default apps (phone, browser,...) support NFC? Is there any default support on Android basic apps (phone, browser, contacts...) for NFC?

Because if I want to develop for NFC, the user will need to install my NFC app. But for simple tasks that use default apps like phone, is there any default support? For example if I want to make a NFC tag to call my phone number. Or would I need to create an app even for this?
Essentially the individual apps don't need to have any understanding of NFC at all, they just respond to one of their standard intents that's been pushed to them by Android's central NFC Service. By default, that NFC Service handles reading the NFC tag and triggering the relevant intent to pass info on to another app on the device, like the Dialler.

One very easy way to play around with triggering actions by NFC is using Microsoft's ON{X} app (yes, bizarrely this is a Microsoft app that's only available on Android). As long as you've already got the hardware support, this lets you trigger a whole lot of actions with an NFC tag, with an absolutely minimal amount of simple scripting. See their recent blog entry on NFC for some of what you can do.