Welcome to the forum Robin, glad to have you
My wife and I shoot with the Canon 1D (THe first one, not the many new ones that have followed) and I'll swear by any of Canon's Pro Bodies. I've shot with this camera in the driving rain covering a High School football game for multiple hours and never had a problem with it.
We also have the Canon 30D which is an awesome camera for the money. I'd love to move up to the 5D for the full frame, but if I only could find that money tree we're searching for
As for lenses, we have the Canon 28-300 L f/3.5-5.6 which is a fantastic lens. It has the USM Motor and has Image Stabilization built in which helps with it not being as fast as my Canon 70-200 L f/2.8. That lens is worth every bit of it's high price tag and is amazing for concert photography, anything low light or fast action. It also has the USM motor and the built in Image Stabilization.
The camera bag also has a few other lens which include a Canon 28-105, a Sigma 17-35, a Sigma 15mm Fisheye and a set of Kenko Extension Tubes that I just got, but havent really had any serious time to play with yet.
For Flash, we use the Canon 580EX and a stophen reflector attached to the top of it which stays on 90% of the time. I try and always shoot natural light, but the flash does come out on occasion when I'm trying to pull out some detail in the shadows.
We have a page on our website that is deicated to all our gear which explains why we chose what we did and includes tons more little things that make carrying it all around that much more simple.
Hope that helps with any decisions, and if you ever have any questions, I'm thinking that between all of us here on this forum, we should be able to answer almost all of them with multiple angles.