Yes, I really rollerblade with my camera in tow, but then I only do "tours", I am no longer young enough to go to a park and do all sorts of artistic flips and turns and such on rollerblades. Usually I would bring the little Powershot in a pocket, but that one is "on holidays in Norway" (my son took it for his class-trip), so I had to sling the 350D round me, with (here comes the answer for Holly then) the 70-300mm lens mounted, which has a macro function when it is extended to between 200 and 300mm. It is that lens in that very macro function that I used for this one here - and, for this particular shot, with the aperture wide, wide open (hence the very shallow DOF).
(And I know it is a bit risky, but unless my water bottle falls out of my pocket and right in front of my right foot, stopping that one instantly while the rest of me keeps moving fast, and naturally in a fierce SPIN then, and unless I then try to instinctively grab onto a street sign to steady myself, I never fall ... the results of that spin from 10 weeks ago, however, are still to be seen and will take me to yet another set of doctors tomorrow :roll: ).