I just got back from Best Buy. I went in to buy a DVD player, but I ended up buying a few adaptors and cables, which actually ended up to be $114 with tax, which is more than an entry level DVD player. These adaptors allows me to connect my X-Box to my NAD DD receiver via optical means. Now I can watch movies thru my X-box with digital surround.
Anyways, my point is the sales people there were more than enthusiastic that I got what I wanted and tought me how the connections work. I was amazed that they actually were knowledgeable about different region codings and were able to contrast the different quality and functions of S-video and optical vs. coaxial. I never got this kind of service from the snobby hifi/home theater stores/shacks that I've been to. When I asked dummy questions (things I already knew but just to test them), they've always tried to steer me towards something that is more profitable.
Anyhow, just to stretch this post even longer, I was a pretty successful salesperson when I was working in a home theater shack in the early 90s. I was cocky enough to claim a room to myself and fix the room up for whoever my client of the week was. A lot of the times, my clients got off the sofa chair and started moving the speakers and connected the cables with me. There really was no salesperson/client relationship going on.
On a side note, when I sold my brother in law a few used equipment, I helped him set it up in his living room, and he just sat on the sofa... relatives.. can do with out haha.