There were some Cyber Monday (or Cyber Week, as some call it).last week, and some of those same models are on sale again for
Toshiba U845 ultrabook ($528-$549 at Walmart and Amazon)
This decent Toshiba ultrabook only has a Core i3 processor, but includes a sleeve and 2GB USB key. A better Core i5 version is $40 more. Amazon has the Core i5 version, sans accessories, for $549 but only for a short time today.
Dell Inspiron 15 ($399 at Best Buy)
Dell's mainstream Inspiron line looks sharp this year, and this is a great price for an Intel Core i5 general purpose laptop.
HP Envy 4 ($549 at Best Buy)
A slim 14-inch ultrabook with a Core i3 processor and a touch screen, for just a bit more than the previously mentioned Acer V5.
Alienware laptops ($100-$400 off from Dell)
Configure an Alienware M14x or M17x direct from Dell, and they start off at $100 off. Some specific high-end configurations with Core i7 CPUs and big 256GB SSDs, are more than $400 off.
If I see any other great laptop deals, I'll update this post accordingly. Feel free to post any ones you find in the comments section below.