Buy.com has a Creative Labs HN-505 Collapsible Noise-Canceling Headphones for $17.13 shipped after $20 rebate.

• Impedance - 21 ohms
• Compact, lightweight -- cancels distracting outside noise like airplane engines and loud conversation
• Lightweight, durable design with soft earcups
• Driver units - 30mm rare-earth magnet transducer
• Frequency response - 20Hz to 17kHz

Click Here for the DEAL