I recently bought my laptop at Best Buy for $740 (that's with tax, without tax it's $680). It's a Toshiba A665-S6050 and it's an amazing computer.
Specs -
Processor: Intel Core i3 @ 2.27GHz
Memory: 4GB DDR3 (DDR3 has twice the bandwidth of DDR2, so technically speaking, 4GB of DDR3 is like having 8GB of DDR2) upgradeable to 8GB
Graphics: Intel HD Graphics (yes it's integrated, but it still works great for games)
HDD: 500GB @ 7200rpm (really good for a laptop)
CD Drive: Yes
USB ports: 4
Number pad: Yes
Display: 16" full HD 720p resolution
Audio: HD harman/kardon speakers (harman/kardon makes incredibly good audio systems)
Webcam/microphone: Yes/yes
OS: Windows 7 64-bit
I can play Blockland on it flawlessly, as well as TF2, Portal, Alien Swarm, etc.