Sorry to necro an old thread but this one comes up in search results and it seems like it hasn't been answered yet. I figured I should answer it in case anyone comes along from a search engine.
In addition to the missing apps listed by the OP, there's also a 15th wallpaper, Han Solo in Carbonite, that seems to be missing from the leaks.
The leaked wallpapers all have the same naming scheme:
StarWarsESB_Binoculars.apk (this is the AT-AT Binoculars app)
And are present in /system/app. You can copy them out of there once you're rooted.
However, the two missing wallpapers are named differently, but still in /system/app:
Asteroids.apk (this is the 3D Millennium Falcon wallpaper)
swipe.apk (this is the The Empire Strikes Back live wallpaper, not Swype)
However, when I copy them out, I get a "App not installed" message. If I ever figure this out, I'll update my guide with instructions on fixing it (see link below).
The missing static wallpaper is with all the others in:
(APK's are just zip files, so you can open them up and see inside)
The Best of R2D2 App is just a video player which automatically loads the video located at:
But the app is a normal user app, not a system app, so it's apk isn't located in /system/app like the rest. You can back it up using Titanium Backup or Astro File Manager or whatever.
I figured this stuff out while writing a guide about ripping all the R2-D2 theme elements from the stock R2-Droid 2 and getting them working again in a ROM on the R2-D2. Here's a link if you want to know more: