@Judeau @nafmo Will this grab external resources though?
A lot of sites may directly block recursive activity (falsely — or not depending on how you look at it — determining it to be bot activity.) You'll want to, at the very least, add --random-wait in the commandline so it looks less obviously bot-like (and hits the server less hard anyway.)
Are there a lot of pages? One thing I'm enjoying is the "SingleFile HTML" plugin to save a page into a single .html file instead of a file + directory with broken resources. However, this would give you individual pages, not the equivalent of a functioning site.
I think there are actually tools specifically designed for archiving sites though. Stuff more directly designed to handle external resources and all. Sadly I can't remember them...