I use FireFox wit hthe FlashGot extension coupled with Free Download Manager.
The key is learning how to use them together. Just install the FlashGot
extension and when you find a file you want to download you can either
rightclick it and choose FlashGot then Free Download Manager or just
leftclick and let FlashGot ask you what to do with the file.
www.flashgot.net/
www.freedownloadmanager.org/
http://homepage2.nifty.com/scallop/
Free Download Manager has a nice 'Site Explorer' function. Just select
the Site Explorer tab and enter the URL of a page with porn pics, movie
clips, etc. Next, click the go button and then just (shift) select the
files you want and start downloading. The great thing about FDM is that
you can tell it to download everything one at a time in succession
without user intervention. This is great for Dial-Up users. FDM also
supports resume and download speed limiting.
If you have some streaming video that you want to download you can try GetASFstream.
It isn't very easy to find and it's in broken english but it works.
You can also start streaming the video then right click the stream in
FireFox, click Properties, and if the stream ends in a filename
extension you can just copy and paste the link into FDM and start
downlaoding it.
One thing that really speeds up FireFox, especially low bandwidth users is this:
http://www.tweakfactor.com/articles/tweaks/firefoxtweak/4.html
I use the Fast Computer Slower Connection setting with my 56k
connection and I can load pages way, way, way, faster than IE ever
could.