I've developed an appreciation for Greene KIng IPA, from the Greene King Brewery in Suffolk, England. It's a cask ale, very gently carbonated, with a classic English ale flavor that's been largely missing from the pubs in my area for years.
Greene King is much more subtle in character than most American IPAs. Here, brewers like to beat you to death with cascade hops. The English use Kent, Golding, and, I think, Fuggles hops and produce bers with a fine balance, complex flavor, and more complete profile. Cheerio to Greene King.