Well, let's see now...
>icons obstructing wallpaper - This is a working desktop, I drop and organise files here before moving them to their more permanant homes.
>taskbar on top - What's wrong with he taskbar on top?
>default theme - As customised as a work computer can be
>microsoft office - Works standard, I've given a presentation at work arguing to use free software but to no avail.
>adobe reader - Again, works standard.
>quicktime player - Again, works standard.