Yep, the primary one that is shipped by RIM and included in the box with most (or all of my past six) BlackBerrys have the removable prongs.
I also have two of these, Double-Talk chargers, for both auto and AC. The AC prongs collapse, and the DC charger will fold flat as well. Great for travelling, you get both choices.
Available at many of the normal BlackBerry sales places, including one of our fine sponsors here, BlackBerryDen.
Blackberry Accessories - Double Talk Charger