April is a month of rejuvenation and light-hearted trickery, a season of pranks, afternoon showers, and street-sweeping tickets. The truly April foolish thing to do would be to miss out on the fine assortment of comedy shows in Denver this month. With a visit from the reigning ice queen of late night talk shows, a benefit for down syndrome, some great local showcases and an appearance from improviser, singer, and all-around showman Wayne Brady, there’s plenty of levity available to carry local comedy fans through the month. Fortunately, many of these shows are free, which should provide at least a little relief to the unjustly ticketed.