No, it's not the first to let you download movies...maybe in so many formats, but...I've never found a website that I couldn't "tweak" the code myself to allow downloading of the video, but then again, I haven't found any worthwhile lately (see below).
The biggest problem I have with these websites is their lack of quality - granted, they're going for speed, but some videos would just be "that much better" with a decent quality - which keeps me away (in general) from those types of websites.

They should offer both - speed by default, quality optional - no need to consider bandwidth. Implement that and I'll be happy!