Skrillex is like star trek and doctor who. A lot (maybe even a majority) of their fanbases are annoying, which I think fosters the ILLUSION that they aren't very good when in fact I think they are.
I'd argue that when it comes to Doctor Who, heheh, but that's a good point. I think Skrillex and dubstep in general gets a bad rap in some quarters that it doesn't really deserve. I've heard a lot of it that I really like that's also pretty different from the stuff Skrillex puts out, but people tend to lump it all in under the Skrillex category.
It's not the kind of stuff I tend to listen to while playing Aurora, mind, but it's still pretty good IMO.
As for Pink Floyd - some of it fits, some of it doesn't. I tend to stay away from the more conventional-sounding acoustic rock stuff and the weird, proto-industrial stuff like 'Money' and go straight for the space-ier songs. 'Set the Controls. . . ', 'On the Run', 'Obscured by Clouds' or 'Quicksilver' are all pretty good choices.