I'll admit what everyone else here is apparently afraid to: Flex/ActionScript 3.
I don't really see a future for MXML in it's current form but the rest of the stack--mainly ActionScript 3 / the SVG drawing API, Video/Audio APIs are definitely worth looking at. Some of the highest paying web development gigs are in Flash programming, and it's a lot less painful than browser programming (which isn't saying much).
I don't really see a future for MXML in it's current form but the rest of the stack--mainly ActionScript 3 / the SVG drawing API, Video/Audio APIs are definitely worth looking at. Some of the highest paying web development gigs are in Flash programming, and it's a lot less painful than browser programming (which isn't saying much).