Are there places in NY, NJ, or Philadelphia where I can fit and test-ride BMC Pro-machines?

The BMC website doesn't seem to work.

Cadence in Philadelphia is a BMC dealer. Very boutique-y, call ahead to see if they have one built in your size.

looks like they redesigned their website recently.
http://www.cadencecycling.com/

i live about five minutes away from Cadence, i ride by there every day on my normal training ride....if you have a certain size and model you'd like me to check, i'll go in one day this week for you and report back

send me a PM or whatever, i'd be glad to help you

http://www.bmc-cycling.com/distributors.html

Hickory and Tweed in Armonk, NY (Northern Westchester Cty). They may not have your exact size, but they have several on the floor which are built, and are good about taking them for a spin. Ask for Rob in the bike shop (the bikes are actually upstairs in a separate building...you'll see if you visit).