NOTE FOR 1TB: The latest 1TB SE Elements drive no longer has a standard SATA interface. I took apart a drive today (date on drive is 06 APR 2010) and found that the USB port is now integrated to the drive itself and instead of a SATA interface there are 12 ATA-style pins that are covered by the LED. So if you want 1TB internally in your laptop, look elsewhere.
There is no way to get them internal?