When at home (UK) then I drink Leffe Blonde
When on vacation (usually US) it used to be Blue Moon all the time but I've recently discovered Fin Du Monde which IMO tastes like Leffe Blonde.
A particular favourite though is the micro-brewed Hefeweiss at Barleys brew pub on Sunset Rd in Vegas. It tastes of Bananas and caramel to me and just slides down on a warm summers day.