Yikes... I worked for Best Buy from 1994 through the end of 1997, and I can say that in those 3 years, I was one of two people in the computer department that knew how to get into a BIOS, open a case, or even what the difference between ISA and PCI was...
I'll wander through Best Buy when I wanna grab a cheap DVD or scout out a no-brainer item (scored my Netgear RT314 for $99, even got a $30 rebate beyond that), but overall Best Buy is teh suck. I mean, it probably beats a snapkick to the groin, but... what doesn't?