I just upgraded and have this in new condition, only been on 1 plane trip, bought in August last year Tamrac Adventure 6 Camera bag. It comfortably holds:
A SLR Camera with 18-55mm lens
55-200mm Lens
50mm Lens
580ex Flash
Canon Ixus 5 Compact Camera
Bose Headset
iPod
Mobile Phone
Charger
CF Cards
Firewire cables, usb cables, plane tickets, chewing gum.. and mints
Not to mention a Wallet, Visa, Passport, Flight Itenerary and if you are REALLLLLLLLLY keen, you can even hang a Manfrotto Monopod off of it, believe me I have done so up until now (well the monopod only for 2 days since that's how old it is!

Here is the company propaganda and pics

nternal Dimensions:
Top Compartment 8½ W x 4¾ D x 8 H
22 x 12 x 20 cm
Internal Dimensions:
Bottom Compartment 9½ W x 5¼ D x 5½ H
24 x 13 x 14 cm
External Dimensions: 11½ W x 8½ D x 15¼ H
29 x 22 x 39 cm
Weight: 1 lb. 15.5 oz (893 g)
Colors:

This ultra-sleek and compact backpack carries and protects a digital or film SLR (such as Canon's 20D or Nikon's D70s) with a 3½" lens attached, an additional lens', a small flash and many many accessories.

The new Adventure 6 features a youthful, modern and sleek design that, for security, does not look like a camera bag. In this uniquely designed backpack, the lower section is a completely foam-padded camera bag compartment, while the upper section functions like a traditional backpack to hold a light jacket, lunch or other personal items needed on your next photo adventure. The front pocket features Tamrac's patented Memory & Battery Management System™ that uses red flags to identify which memory cards and batteries are available. The foam-padded camera compartment has a weather flap and quick-release buckle for security and weather protection. Two mesh pockets on the sides provide quick access to accessories and water bottles. Two lash tabs on the bottom of the backpack can accommodate a compact tripod (requires accessory straps). The pack is equipped with an adjustable waist strap and an expandable sternum strap. Also features Tamrac's Strap Accessory System™ attachment points for customizing with optional S.A.S.™ products.




So How much would you expect to pay for this?
$1000?
$2000?
NO!!! ONLY....
$100!!!!!! YES IT IS INSANE! BUY NOW BUY NOW!
Highly Negotiable as always with honest Dan the camera bag buyers friend!!!

This bag will go beautifully with Hein's friend's 30D for sale, or even better YOUR OWN!!!