Originally Posted by msheredy
I wouldn't worry about it. Not everyone experiences this on the Benzes either. Try this one though. Put your car into 1st gear at a stop light/sign. Take off normally and slowly build your RPMs, around 3000 RPM you might feel the jerk. Try it out next time and let us know.
At 3,000 RPM, yes, I definitely feel the SC kicking in. But ShawnQ's first post in this thread explained that:
When my car is cold, and I am pulling out of my driveway (I say cold, but it is 110*+ in my garage), as I put it into 'D' to take off up my street, I get a 'hiccup' upon first pedal press. It is slight, maybe 1/10th second...but it acts as if there is a lack of spark, and over abundance of fuel, or not enough air. This is not a severe or harsh pedal mashing, but a leisurely stroll type take off. I am just normal driving when I get it. I almost assume it is something that is relative to supercharged cars - but I could be wrong. It only happens when the car is first started.
That sounds different to me: a cold car; just taking off slowly; first pedal press; a leisurely stroll normal drive cold start from the driveway. I do get the very slight kick when the SC engages @ about 3,000 RPM, but not in the conditions I understood ShawnQ was describing, since I usually don't hit 3,000 RPM for a few blocks when taking off from my neighborhood. Any other time, though, I'm happy to feel the hiccup since I know the fun is about to begin! 
Thanks for the tip and for the reassurance. See - no more worries, and I feel better already! 