Zinfandels are hit or miss for me. Some Zins subscribe to the "fruit bomb" theory of red wines -- think liquefied blackberry jam mixed with vodka. Some people love the fruit bombs, but they're not my thing. But drier, spicier Zinfandels are some of my favorite wines.
One of the best Zins I've ever had is the Cline Cellars Ancient Vines Zinfandel. It practically explodes on the tongue, with tons of fruit and spice, and goes down with a delightful peppery finish.
Note: don't confuse this Ancient Vines Zin with the Cline red-label standard Zinfandel. The latter is very fruit-bomb-y, with much less character and pop. Econo Boy loves the Cline red label, but I'm less of a fan. For a good comparison of the two Clines, see this post at CheapWineRatings.com. Unfortunately the Cline red label is much more widely distributed than the Ancient Vines, but if you're ever in Sonoma, Cline is absolutely worth a visit!