If you don't already think Debian is the most awesome distro on either side of the Mississippi then this might help convince you. Do this:

# apt-get install prozilla
# apt-get install prozgui
prozgui
File>New URL (or CTRL+N)

Now just go find that big fat 700meg .iso you've been wanting, browse all the way to the file - ftp or http, right click, Copy Link Location and past that into the New URL field>OK (You may or may not wish to select "Search for ftp mirrors).

Sit back and enjoy.