I use an add-on for firefox called DownThemAll! for galleries and the like. You can use it to get videos and zips/rars as well as pics. It also works from a forum like this one.
Example:
If you have an RS Premium account and have it turned on to automatic download this will work. Go to a thread with a huge amount of links, all on RS. Rather than clicking on each one separately you just click on the DownThemAll! button on your menu bar and it will find all the links on the page for whatever type of file you want, or all types, and queue them in a huge list for downloading at you convenience, you will have to note down any passwords yourself and I wouldn't recommend downloading more than 5 files at a time from your list, but much easier than clicking on each one separately.
For site ripping I use a program called teleport pro. More complicated to use but ideal for getting whole sites. I can set it running overnight and wake up with 10GB's of movies the next morning and sort out what I want to keep. You can set it to download pics movies or even create a working copy of the site with all the content on your hard drive. Of course you need a working pass to the site for it to work.
Example of teleport pro wizard choices in the pic below.
Download them all is available here:
hxxps://addons.mozilla.org/en-US/firefox/addon/201
I'm afraid I don't remember where I got teleport pro from but I think I still have the file somewhere so could dig it out for anyone who wants it. PM me if you do.
I hope this helps anyone who needs it.