B&H Photo has a very good deal for the Canon EF-S 17-85mm f/4-5.6 IS USM lens, get it for just $299 instead of $439.

Canon EF-S 17-85mm f/4-5.6 IS USM specifications:

• EF-S Mount Lens
• 27-136mm (35mm equivalent)
• Aperture Range: f/4-32
• Aspherical Lens Element
• Optical Image Stabilization
• Ultrasonic Autofocus Motor
• Manual Focus Override
• Truly Circular Diaphragm
• Minimum Focus Distance: 1.2′
• 67mm Filter Thread Diameter