They usually have deals on batteries all the time, sometimes a rebate is invloved, othertimes there isn't a rebate involved. I think the $3.99 battery packs are buy 1 get 1 free now but the last deal I did was for a 48 pack of AA batteries FAR.
I also agree about the DVD Players, they had a Panasonic DVD Player for $59.99 that I got and I wanted to compare prices and it was around $75 on Buy.com. I was surprised they actually were that much less on something since FYE is usually way overpriced on stuff besides games.
They also have 25% off all DVD boxsets $49.99 or more. What sucks is that some stuff that was $49.99 was put on sale for less than $49.99 so it's not eligible for the 25% off like the Seinfeld boxsets (marked down to $42.99)
They also have a DVD stock up sale going on, all $14.99 and $15.99 DVD's regular priced are 2 for $25, 3 for something (forget price) and 4 for $40.