The One With The Lens Monster
If EOS7D is the Image Monster, I would deem this to be the Lens Monster (at least for EF-S lenses).
Je vous presente, le EF-S 17-55mm f/2.8 IS USM.
Photo from photozone.de
Good range (17-55mm, an equivalent of 27-88mm on my 1.6 crop body) – check!
Image Stabilizer – check!
UD elements (as per those used in L-series lenses) – check!
Large constant aperture at f/2.8 – check!
So, I bought it.