If you've ever wanted to register givemehobomodos.com, wiidownmypants.com or andirocks.com but never had the guts to pull the trigger, GoDaddy is offering 1-year .com domain registrations for $0.99 (normally $9.99).
Select 1 year for a single domain per customer and use the coupon code 99BUYCOM upon checkout. Though the coupon code is good for both new and existing customers, redemption is limited. Update: Deal expired—max redemptions just reached as of 3PM. [GoDaddy via TechDealDigger]