The Droid X comes loaded with several nonstandard applications for Google's Android, most of which cannot be removed.
Among the phone's so-called junkware is a Blockbuster video app and a demo for an Electronic Arts game called Need for Speed: Shift.
The software from the struggling movie retail chain includes a store locator and a section to download mobile movies from Blockbuster's catalog. This app cannot be uninstalled from the phone's software library using any traditional means. Users can delete it from the home screen, but it lives on -- permanently part of the software embedded on the device.
http://latimesblogs.latimes.com/technology/2010/07/android-junkware.html
You can’t remove them because Android is open. (shamelessly stolen from John Gruber).