Ah, feels like we've already done this.
Anyways...
Canon EOS 450D.
Canon EOS 300D (I NEVER use this.)
28mm wide
18-55mm kit (2 of these, 1 for 300D as well)
50mm prime
70-200mm f4/L (My baby!)
another 70-200mm, a cheap, older plastic one, (On the 300D, again, never used)
Canon Speedlight 420Ex II
Cactus V2s Wireless trigger set
Manfrotto ProB Tripod (Large)
Manfrotto Ballhead.
National Geographic NG2475 Large bag. (Usually for Laptop and accessories, can hold 1 camera, 2 lenses)
Blacks Signature padded bag
(2 Cheap Canon bags, 1 of 450D, one for 300D)
Various filters, about 1 for each lens.
2 batteries for each camera, charger etc. (Battery grip on 300D, again never use)
4 x 2GB Memory Cards (Pretty much only use 1 of them, which is Panasonic Class6 SD)
also have bags for various lenses, but are never used.
Cleaning kit, blower, cloth, etc.
And, for my small videography:
Kodak HD Zi6 (record 720p HD @ 30 or 60 fps.)
Joby Gorillapod for that^^
Tons of photography books and magazines, don't know if they count, but eh I bring some of them out when I am looking for some inspiration.
Soon to be added to my collection on Friday:
Either Canon FTB or Fujica ST705 SLR Film cameras