I attended a wedding yesterday as a guest and left my Canon gear at home. The pro and his assistant had three 30D bodies and he had the Sigma 120-300MM f/2.8 lens mounted on two of them. He had a Canon 17-55MM EF-S IS on the third body. I have not seen much talk here about the Sigma 120-300MM f/2.8 and was just curious as to its merits. At the reception the pro set up two remote flash units, one on a pole and the other on a glass door suction mount, he aimed both at the ceiling and had them slaved to his 30D which had a 580EX mounted. Whenever he made a shot the whole room lit up 
BTW...I was reduced to using my wife's Olympus P&S...ugh...red eye in most of the shots
I did manage to capture a couple of decent shots...here is the new Mr. & Mrs. coming down the aisle after the ceremony was complete.

