It's likely a combination of a Unix-like OS and special effects. On the fourth screenshot I can barely make out "System: Free-(illegible) BSD" and "Kernel: 7.3-Release" so it may be based on FreeBSD 7.3. There are some real-looking transparent terminals running in chromeless windows, which may be from a WM like E17. On that screen I'm guessing most of the fancy images and animations, and of course the giant-size text, were added after the fact. The second screen shows a some sort of terminal-based program in a window and I'm guessing something simple like OpenBox for the window manager and Thunar or a similar file manager that supports desktop icons. That screen seems to be the most realistic out of the four and is completely different from the other three.
As mentioned, it would not be impossible to set up a real Linux system to look vaguely like some of those systems. Stuff like translucent windows have been reality for over a decade. Much of them are simply special effects that were done to make it look cool (and legible) to movie viewers. To answer the original question, none of those screens are likely to be Ubuntu and it's impossible to know if any are even Linux since pretty much any Unix-like or UNIX system that can run an X window system will look the same.
HP ProBook 4540s: Intel Core i5-3230M, 8GB RAM, 480GB SSD Kubuntu 14.04
Custom Built PC: Intel Core i7-2600K, 16GB RAM, 1TB HD, Radeon 6870 Windows 8.1 Pro