SimCity debacle with a 75 percent discount on the entire series on Steam.
The best deal in all the discounts is that the excellent Tropico 4 in its "Collector's Bundle," which includes every piece of DLC, along with the Modern Times expansion (which includes another full campaign), is only $10.
The Tropico sale will last one week until March 15. That should be enough time for EA to figure out the SimCity servers. We really, really, really hope.