Well, I've had a good experience with BB price match about a year back.
BTW, before I get into that, let me confirm that until middle of last year... BB DID have a 110% price match gaurantee... I've used it and it worked well.
Now what happens at BB and sometimes at Circuit city is that since these guys have the "buying Power" they DIRECT their vendors to make specially marked models for them. I bought a SAMSUNG 27" TV about a year back from BB. I happened to spot the same TV in CC for about $40 less. NOw when I went back to BB for a price match, those guys were so confrontational from the beginning. They pointed out that the model # did not match. The model no. of the BB TV had a T in the end. However, none of them could identify a single difference in features between the TV at CC and BB. I spoke with their respective branch managers and even they couldn't do a thing. Later, a friend (whose father is a district sales manager at one of the BBs) told me that this was a "tricky" policy at BB. For high priced items, they ask specially marked model nos. from their vendors and so they can get out of this price matching issue. I took this matter up with their store managers and by threatening them of legal action, got my 110% of the difference.
Since then BB is out of my evoked set...always.
Hope you enjoy pricematching at BB though.