This Week's Sales
Toys R Us - 20% off these Toy Story 3 sets; Western Train (7597), Trash Compactor (7596), Lotso's Dump Truck (7789), and the TRU Exclusive Garbage Truck Getaway (7599); Additionally, you can receive free shipping with purchase of $49+
Walmart.com - 25% off Lotso's Dump Truck (7789), 21% off Western Train (7597), 20% off Trash Compactor (7596), 13% off Army Men on Patrol (7595), 20% off Freeco Speeder (8085), 20% off Droid Tri-Fighter (8086), 17% off Hyena Droid Bomber (8016), 40% off Brickmaster Pirates Book (DKPirates), 31% off Container Heist (5972), 22% off Gold Heist (5971), 13% off Hyperspeed Pursuit (5973), and 24% off Galactic Enforcer (5974); Additionally, they are offering a great Star Wars bundle (Darth Vader Tie & Trooper Battlepack) for $29.00; Lastly, many of these sets can be shipped to a store for free or shipped to your home for 97 cents.
Update: Not sales related, but Target has started putting out Summer sets. I found several Kingdoms and World Racers sets. Additionally, they had (30040) and (7802) at each checkout aisle. No minifigs, though.
Update 2: LEGOShop.com has put several new items on Sale including a couple Bionicle, Power Miners, and Racers sets. Please note, though, that a few of them are already listed as SOLD OUT or CALL TO CHECK AVAILABILITY.
Update 3: Toys R Us is offering its "Rewards" members a coupon for Buy 1 Get 1 50% Off ALL Lego City sets, valid Thursday 6/24 only. The coupon is emailed to "Rewards" members that have signed up for email notifications. If you're not already a member, you can easily sign up online.