BUTTERCUP DAYS: H.D. Buttercup is not only one of the mammoth shopping icons of Culver City, we'd call it one of our city's biggest furniture-stravaganzas. Wait. State. It's huge. So when it marks its fifth anniversary, the deals and selection will be on the huge-ish side, too. There will be special deep discounts, and 20-percent-off-tags elsewhere. Eye the details.DATES: May 5-9, 2010. Does Mom want to go browsing for a red velvet ottoman her big day? Does she need a new pewter hat rack? You might ask her.