Now USB 3.0 compatible pen drives have been launched.Don't worry these work with USB 2.0 as well but to exploit their strength you  must have USB 3.0 compatible hardware.
Here are some saliant features of this new product(as offered by transcend):

- SuperSpeed USB 3.0 compliant and backwards compatible with USB 2.0
(USB 3.0 up to 5 Gb/s, USB 2.0 up to 480Mb/s)
- Durable anti-shock rubber outer case
- Advanced internal hard drive suspension system
- One Touch Auto-Backup button
- StoreJet® Elite backup and security software Now get ready to change your hardware and experience high speed computing... (courtesy : transcend e-papers)