Main Camera
my main camera for the last two years has been the Canon 1Ds2. It has worked reliably and produced excellent results. I do find that if one really lightens the shadows, there is some striping so if I need really open shadows, I will shoot more than one exposure and blend manually (layers in Photoshop) or even use HDR.
Backup Camera
Panasonic FZ-50
Lenses For Canon
17-40 - slightly soft corners on a full frame camera but good elsewhere
24-70- decently sharp - wish it had IS for walking around - can't really justify a 24-105 as well
50 macro - small, light, sharp
90 ts-e, I use it both for tilt and for shift-stitching
70-200 f2.8 IS
Tripods, etc.
Tripod - Gitzo 1348 - 4 section carbon fibre tripod with centre column. I added a Manfrotto tilting base for under the Acratech V2 ball head. The camera has RRS L bracket and I used a RRS nodal slider for rotation stitching.
Cable Release - after wearing out several Canon electronic cable releases, I'm now trying a Radio control release - the control clips to my jacket, the receiver sits in the hot shoe. We'll see if this proves more reliable in the long run, though it's been handy already.
Computer
Mac G5 - this is now a generation removed from the current quad intel Xeon chipped Macs but it continues to function well for the most part and buying more hard discs has been a bigger priority for safe backup than having a faster computer. I use PC's at the office without choice and you couldn't persuade me to switch to a PC at home - they are cheap and fast but frankly Windows XP is poor and unreliable, Nortons Antivirus should be strung up and Mac applications work well together. Mac does have some printing issues and often a new OS release has some compatibility issues for the first few months - I have not yet installed Leopard for that reason, but in another month or so I will.