Best feature in iTunes 6.0.2

The best feature in iTunes, apart from the mini-store (ha ha), is multiple-speaker support. This means I can have my built-in speakers on my computer and my Airport Express all playing at the same time.

And somehow, they're perfectly synchronized, so I've got one source playing music in multiple rooms in my house. I could add more Airport Expresses around my house to get every room filled with music.

It'd be cool if someone created an all-weather Airtunes speaker set so I could have this outside the house, or in the shower.