Hi,
I would like to suggest a feature to pacman which would act similar to the --pretend argument on gentoo's emerge, thus if you passed the flag, whatever it ends up being, it works out everything its going to do, and then instead of doing it, will print out a list of urls, of the files it would have downloaded.
This is particularly usefull for people who dont have broadband access from the machine they are on but do elsewhere. Thus allowing the to download files remotely and dump them into the appropriate directories and then run the same command without the flag so that pacman will use the packages and install them.

Cheers Jonas Bergler