I have been wanting to watch movies on my Air. I do not watch movies twice normally and so buying them through itunes makes no sense. Rent them through itunes also seems to not make sense since I can get the same 4.99 movie rentals from redbox for little more than a buck. My question is this - Is the Apple superdrive worth the 80 bucks or is there a cheaper and better alternative that works nicely with the Air? I have the last updated version 1.6 i5 Thanks in advance for any help you may offer.