Well, it's kinda tough for something not to be bloated and to have a nice GUI at the same time
As far as "easy" goes, Red Hat offers some pretty impressive graphical server stuff. You could purchase Red Hat Enterprise Linux if you want technical support, warranties, etc. etc. Otherwise, I'd recommend Fedora Core 1. To avoid bloat, make sure you only install one GUI (I'd recommend GNOME since RH's server tools integrate better with it -- but you can choose whatever you want) if any. Make sure you choose custom install instead of server install, as by default server installs won't have a GUI, unless you want a large 5 gig system. So choose custom, don't install anything stupid like games, and just cut the fat whenever and wherever possible.
Only problem with Red Hat is that it can sometimes be difficult to install software during post-install (after you've installed the OS) -- if you don't want to face "dependency hell" you should use a distro that uses APT or something similar by default, such as Debian (not recommended if you're as lazy as you say you are), Ark Linux (the one I use, good for beginners), or Mandrake.
Hope that helps.