And Gnome can run KDE Apps Perfectly.. Try Running GTK Apps in KDE :-&, They Look Fugly!
One Can Easily install KControl in Ubuntu and Play with to Make the Color Scheme to Match the Default Ubuntu Brown/Orange One..
And ANY KDE App can be Installed, If you hate to Download them, Just get the Kubuntu Alternate ISO, Add the CD to the Repos and then apt-get the Usual Way..