Canon 5D (~$2K when I got it)
16-35 2.8L (~$1500)
70-200 2.8L (~$1200)
50mm 1.8($90) Don't be fooled by the price. This lens is a must have and takes very crisp pictures. It's just a plastic housing and can't take any abuse or mistakes.
580EX ($450)
Most of the gear I got a deal on but I did pay retail for the 16-35mm. It hurt but man do I love that lens. A good set of filters is key too. I use a B&W polarizing filter on the 16-35 and tiffen on the others. Still need to upgrade the 70-200 filter to a B&W. You can spend all the cash on the lens and then get a crappy filter and ruin it all.
Canon ran an ad once that said, "How important is a lens? Gee, it's only the thing you look through." I used to buy the knock off brand lenses. Once I used some of the high end Canon's I couldn't go back. The difference really was night and day.
And that flash has more options than I know what to do with. I try and avoid using a flash if at all possible, but that puppy does rock. However, anytime a flash comes with a freaking LCD screen, it also comes with a manual that's way too thick. Luckily I can run it on full auto and it knows what lens is on the camera and where it's zoomed to and adjusts the flash power accordingly. Some day I'll learn to use it but it'll take a class or two to do it and remember it.