It really ticks me off how behind the Quicktime UI is. Sure Quicktime technology is great, but the Quicktime Player and plugin really suck and makes the Mac look bad.
Here's one simple feature I'd love Apple to implement. Make it so I can play an embedded quicktime file on a webpage as fullscreen with all those nice Quicktime fullscreen controls that Apple so proudly presented at Macworld 2005.
Windows Media Player on Windows can do this perfectly, why can't Quicktime??