So, I have been a lifelong PC guy...just switched to Mac in September when I bought my MBA.

I am very very glad I switched to Mac, much faster and much more reliable than my old PC. So, I don't have much experience with Mac, and definitely not an accessory like Airport.

A friend of mine showed me how he was using his iPhone to play his iTunes library thru his home stereo using Airport (which completely blew me I want one. lol). But what else can I do with one? I have an 80gb MBA, so I use an external's kind of a pain to always have to move it around when I need stuff; can I connect to my external HD wirelessly? Is it possible to connect my external MBA Superdrive to Airport and read the disc (kind of like the remote disc which is comes w/ MBA?)

What other kinds of stuff can I do?