I've seen what Ubuntu managed to realize in the past years, and I must say I'm very excited about it. Even though it's missing decent and easy to use fake Raid support, I might try to install it. Compiz is one of the cool things I've heard great things in Ubuntu. Now, KDE 4.0 makes use of some of these effects adding a welcomed revival of the old user interface. Cool!

VMware is a virtual machine solution which allows you to run an OS on top of another OS. So it's like a PC in a PC. But VMware made the next step with Fusion for Mac. Now the applications can be taken out of the virtual machine, and integrate perfectly with the Mac's OS X. Now imagine this feature on linux! If they will adapt it for it, it's going to be one of the biggest breakthroughs in linux technology yet! At least for the normal desktop user!