Here are all my pictures from the Brickworld LEGO convention in Chicago:
Miscellaneous (14 photos)
River Ballroom (Vendors) (79 photos)
World of Lights (100 photos)
Botanic Garden Ballroom (434 photos)
Ravinia Ballroom (1,014 photos)
Lake Michigan Ballroom (512 photos, 1 video)
Events (51 photos)
Collection
All the above sets are also available through the All Brickworld 2011 Photos collection.