I used to spend hours in the Trek section and the magazine section (looking at Trek magazines) of my local Waldenbooks. It went out of the mall in the town I grew up in back in 2005. I now tend to do more bookstoring at Half Price Books for older sci-fi books than I do new stuff. (About the only releases I buy new are Honor Harrington books!)
Someone mentioned Tower Records... I was never really exposed to that brand, but it reminds me of Suncoast and Musicland. Between the two of them, I built my video and, later, DVD collection (well, between them and Half Price). I was crushed when Suncoast tanked its way into BestBuy, followed closely by Musicland. (Of course, at the time, there wasn't a BestBuy near me. Now, I live a 10 minute drive from one.)
Rob+