ClubIT.com has the LITE-ON LH20A1S12 20X Dual Layer + DVD-RAM SATA Black Triple Format DVD Writer Retail for $40 - $5 rebate [Exp 6/24] + $0 shipping = $35 shipped. Good for those who want SATA and cannot deal with the dreaded ribbon IDE cable.
http://www.clubit.com/product_detail.cfm?itemno=CA1547202
http://www.clubit.com/product_detail.cfm?itemno=CA1547202