Not natively in the system, but there are plenty of 3rd party programs that let you download the flash files (.flv videos) I use keepvid.com, but that's on mac.
I think Chaos has a program he uses that works for most sites (gayporn.com etc) and also boatmad. maybe he'll chip in here.
"I Agree with everything you say really!" - John Cooke to Jon Fuller - 26-01-2013