I brought my Schwinn into my LBS (Trek & Specialized dealer) for some new headset spacers. They took my bike into the parking lot and drove over it several times with a large pick-up truck.
Just kidding.
My LBS is cool with my bikes and my online parts although much of the time I buy from them because I hat to wait for mail order. In return, they have cut me some great deals on parts and have given me plenty of free labour.