Radical Brewing by Randy Mosher is a great source for base recipes. They get you in the ballpark without the frills.I've been meaning to pick this book up. There's some great ideas in this thread...thanks guys.
Definitely pick it up. In addition to tons of recipes (to include obscure and "extinct" styles), he also explains beer history and good explanation of styles and methods of brewing different brews. Great read! John Palmer's How to Brew may be the definitive how-to book, but IMO Radical Brewing is the #2 must have.
Secondary: Oktoberfest, German Pilsner, Double IPA,
In Bottles: Lucknow IPA clone, Rough Rider Brown Ale clone,
John Harvard Imperial Stout clone, Hoppy Amber, Witch's Brew (Habanero and Smoked Corn Small Ale), Porter, Dunkleweizen, Dry Stout, Irish Red Ale, American Maple Wheat Ale, Black Wit, Belgian style Wit, Belgian Golden Strong Ale
Kegged: IPA, Saison, Hoppy Brown Ale