Those are movie-resolutions. When DisplayPort gets updated, it might have those resolutions, but currently it supports all resolutions COMPUTER DISPLAYS have, since it's made for COMPUTER DISPLAYS.
So what if they're movie resolutions? HDMI supports them, DisplayPort does not.
Conversely, HDMI supports all the same resolutions as DisplayPort. HDMI does support 2560x1600.
Yes, from my stereo. Not from my screen.
A stereo? Guess you need to upgrade your setup for HDMI audio support anyway
When I'm playing games or watching video using either my Mac or my PC, my audio is all coming out of my receiver powering my surround sound set up. So, again, HDMI is more convenient and offers better quality.
That's a good use of HDMI cable! You're using it to connect to a TV instead of a COMPUTER DISPLAY.
Yup and I'm using HDMI to connect my unibody MacBook to my LG desktop display. Another good use of an HDMI cable
It's not Apple's standard, Apple has simply decided to use this standard. Argue with them (steve@apple.com? @mac.com? I forget.)
Actually, Apple's implementation of it IS their standard. Why? Because the actual mini DisplayPort standard supports audio, while Apple's implementation does NOT support audio. The mini DisplayPort to HDMI adapter I have supports audio because its part of the standard. But, again, Apple's implementation in all of their current Macs does NOT support audio. So, again, right now it is Apple's standard.
Well, technically the adapter from MDP to HDMI would be royalteed (whoa, that can't be a word??), but an adapter from MDP to DP would be royalty-free since DP is royaltee-free.
Which is exactly why Apple doesn't make mini DisplayPort to HDMI

If they did not only would they be paying the licensing fee they loathe, but then they would fall right into the hands of my argument that HDMI should just be included by default. As it stands right now (just googled it), all three of Apple's mini DisplayPort adapters are licensing fee free. So that means they get to pocket the entire purchase amount after manufacturing costs. Which would be what? About $1 for the DVI and VGA adapters?