Flash - Coming sooner than we think
Samsung's just announced their first 256GB SSD. Not that you needed to know anything more than that to trigger salivation, but the MLC-flash SATA II drive has speeds of 200MBps read and 160MBps sequential write. Not like we'll be able to afford it or anything, but they'll be available come September, with a 1.8-inch version due in Q4.
Sure, it'll be expensive at first, but it will come down - and the size - my MacBok Pro has a 250 GB drive, but just imagine the battery life (and near silence) of one with a 256 GB flash drive.

Comments
5 minutes extra battery life
[Craig Baker] May 26, 2008 0:44:41.558
I think the reality is you will get maybe an extra 5 minutes battery. The CPU and screen are the real power hogs.
but LED displays???
[ Troy Brumley] May 26, 2008 19:05:45.780
Comment by Troy Brumley
Two things. First if you configure your drive to not shut down when not in use, the HD becomes a noticeable power drain. My casual reading also leads me to expect that new generations of LED displays will also use less power than current LCD displays.