Another thing that BB does (at least my BB does) is accept competitors coupons. I get West Coast video coupons every few months that are for 99 cent rentals (and you can rent up to four at a time). My BB takes them without a problem.
You may also want to join the BB rewards program. It's 10 a year and on Mon, Tue and Wed you can rent one movie from the new section and one from the old section for the price on one rental. After you rent 6 in a month, they you get a coupon for a free rental. You also get one coupon a month for a free rental from the older movie section.
I just signed up for Netflix. I think that for the $20 a month I spend at BB I get a slightly better deal with Netflix and there's no late fees or driving to BB. Just walk to the mailbox and back.