I'm not a big white wine person but my two favorite Red wines
Simi Alexander Valley Cabernet Sauvignon 04,05,06 ( $20.00 a bottle)and any montepulciano italian red wine. ( never over $ 15.00 a bottle).
I do have many more but another few good cheap wine is Barefoot Cabernet, Steap Leap Carbernet, Rutherford Hill Carbernet & merlot.