You yet have time to celebrate Cask Ale Week. It began Monday 29 March but it continues through Monday 5 April. This party for fresh, living "real ale" is organized in the UK; most of the official activities occur there. There are, however, a few unofficial participants here in the US. [Click here for a list.]
You can enjoy cask ale 'weeks' year-round in the US. Click here for Alex Hall's list of outlets that regularly serve real ale.