I love details: If you run a MacBook (Pro) with its lid closed (with an external display and keyboard connected), the sound is automatically unmuted and muted when you connect and disconnect headphones.

I hate it when details go wrong: When I use the latest video iPod's search feature, it shows albums in its search results, which is great. But when I select an album from the search results, the tracks are presented in alphabetical order instead of track order, even though the iPod knows damned well I'm looking at the complete contents of a single album. I know of no way to play the album in track order except to completely back out of search and re-find the album by browsing all albums.