Newegg has a one day sale, lots of goodies to choose from with free shipping, some notables include:
LG GH22NS40 Black 22X DVD+/-R SATA DVD Burner - $17.99
Seagate Barracuda LP ST32000542AS 2TB 5900 RPM 32MB Cache SATA 3.0Gb/s 3.5" Hard Drive - $109.99
Use Promo Code EMCYVYT39 to knock the price down to $99.99
This is the 5900RPM "Green" series, which will be slower than a 7200RPM drive. Read the reviews too, a decent amount of failed drives, but for 5 cents/gig, it's hard to pass up!