Maxtor Basic 160gb ext HDD $109 at Officeworks
"# Fast interface transfer rate up to 480MBits/sec using Hi-Speed
USB 2.0 connection.
# Fast 7200rpm, with seek time under 9.3ms.
# Spacious storage capacity - 160GB.
# Every 100GB of storage can hold up to 75,000 digital photos (JPEG-normal)
or 1,650 hours of digital music (MP3) or 7 hours of DV video."
17/08 - edited this deal as the price has come down from 129 to 109. Not sure if the saving of $20 still applies though so check before you buy.