Another option is www.YouSendIt.com which allows you to upload files of up to 50 MB (free, larger files with some fee, I think).
You upload, and a link is sent by e-mail.
Of course if you send the link to yourself, you can then forward it on to as many relatives as needed, and each can download.
Makes far more sense for you to use a librarian tool like WinZIP (or for free, I think, ZipGenius) to put a lot of photos into a single downloadable file and let them 'unpack' into a new folder at their end.
I don't know what size your movies are, but another option would be to get some cheap web hosting, and save your files there. You can use built-in FTP command on Windows to upload a ZIP and then download it with the web browser at the other end.
Lots of places offer cheap/free web hosting - most require you to have a domain name, however, but that can be done for maybe a couple of quid, and then a fiver or so for a year's web hosting might be found on Ebay.
(I'd offer some space for free, but am in the middle of moving from one firm to another, at present... however, if you are interested in this option, can 'lend' you use of one of my domains (for 6 months, say), in a week or two, when things have settled down a bit!)