From here:

After reading nearly five thousand blog posts from the Reformed blogosphere, I have no doubt that the Reformed, while stridently unified by Calvinistic theology though and far from being uniform in matters like baptism, can be described and critiqued as a diverse, but recognizable, movement. You might be a Reformed Christian: if you listen to Bob Kauflin, Caedmon’s Call, and Max Mclean’s reading of the ESV Bible (sometimes at work), use sermon illustrations from Pilgrim’s Progress, drink orange juice to the glory of God in the morning and wine highly diluted with water in the evenings, and always use the cheapest PC laptop you can find; if your reading list consists primarily of John Piper, Wayne Grudem, John MacArthur, D.A. Carson, Ligon Duncon, R.C. Sproul, Jerry Bridges, Mark Driscoll, Paul Helm, Rick Phillips, Phillip Ryken and James White (not to mention Mohler, Dever, Mahaney, etc.) and your sparring partners include Bill Hybels, Rick Warren, Brian McLaren, or that guy who wrote The Message Bible; if your idea of quintessential Christian discipleship is John Calvin, John Owen, Jonathan Edwards, or just anyone named John; if you don’t like Al Gore or the liberal media or big government or Christians who vote Democrat or “contemplative Christianity”; if your political concerns are gay marriage and abortion and not so much poverty, AIDS, the economy, pre-emptive war policies, racism, and especially global warming; if you are into the Puritans, Van Til, or the Westminster Confession; if you like to talk about how Augustine and Aquinas believed in the “sovereignty of God” but gloss ove their Catholic convictions about justification; if you sleep tight at night assured of your salvation because you KNOW you are one of God’s elect; if you see the Bible as a storehouse of facts and divinely revealed propositions that can systematized into a body of truth that doesn’t have to reckon with reason, experience, or science and never be seen as collection of works written by human authors that share in the story of God’s redemption; if you know the inerrant truth and believe it inerrantly; if you’ve ever been creeped out by a church that appreciates art, architecture, sculpture, icons, and has a crucifix hanging on the wall; if you loathe words like “story”, “narrative”, “relational”, “community”, and “loving” and use words like “Doctrines of Grace”, “heresy”, “glory”, “glorious”, “God-centered”, “God-entranced”, and “supremacy”; if you grew up in a home that appreciated Billy Graham that in retrospect seemed too Arminian, man-centered, and seeker-sensitive; if you subjugate women to men in all levels of ministry, prioritize blogging over evangelism, and like your theology “robust” instead of “feminized”; if you see your conservative theology having no divide from conservative politics; if you want to stop dating the church and start practicing church discipline; if you long for a community that is confessional, historic, and traditional like a rock or an anchor; if you believe love gets in the way of doctrine; if you believe God wants to save everyone but damns a lot of them before they did anything good or bad, that they deserve their punishment for sins that they were prepared for; if you believe God’s love for everyone has a little to do with his Son dying on the Cross and more to do with allowing them to enjoy the benefits of creation; if you believe following Jesus is all about believing the right things but not really about living the right way; if it really bugs you when people talk about “spiritual formation” instead of justification; if you disdain topical preaching; if you use the word “expository” as a code word for “preaching through Romans”—if all or most of this tortuously long sentence describes you, then you might be a Reformed Christian.