Pros:
The 5th dimension, a dimension unknown to man, the dimension known as... the Twilight Zone. Need I say more? Yes, this is just what the doctor ordered. Nice quality overall with an animated clock cursor, good quality desktop icons and plenty of 5th dimension sound effects. There's even a UFO screensaver (some of you may already have) along shutdown and startup logos. No tweaking required.

Cons:
The wallpaper file is a bitmap but doesn't have the quality that comes with one. The sound files are great but recorded in low quality.

Overall:
Either go with better quality in the form of a bitmap or just go with a jpg file for overall file size. Resample the sound files and give this theme the rating it deserves.