Biggest installed packages in Fedora

 
Quick tip to see which are the biggest currently installed packages on your Fedora box:
rpm -qa --queryformat '%10{size}-%{name}-%{version}\n' | sort -k1,1n
 
You might also be interested in fslint:
yum install fslint
It lists packages by size, and it will autoselect dependencies for packages you want to delete