All of it! Just kidding -I'm actually really into red wine, so I have a big list, but I'll only put a few here. I'm a big fan of California reds, but I do enjoy Italian, Australian and South American reds -I just don't find nearly as many of them that I like. French reds always disappoint me -even the really pricey ones.
My all-time favorite is 2006 Silver Oak (Napa) Cabernet Sauvignon. The Alexander Valley version is good, but not as good and other years are the same way. Be prepared though -it's usually over $100 per bottle! Someone else mentioned Turley, and it's a great wine too as well as Camus. All three are expensive.
My favorite current "go-to" bottle is Sebastiani Pinot Noir or their Cabernet. It's quite good for $11-$15 per bottle. Fat Bastard Cabernet is also good at that price point. If you want less expensive, I enjoy McManus Cabernet and 97 lb. Rooster Zinfandel and Cabernet.
I'm not much of a Merlot drinker, but a common and VERY good Merlot is the Kendall Jackson -$12 -$20 per bottle depending.
My FAVE that's affordable, but still pricey enough to be a semi-splurge and not something I drink every weekend is Rosenblum Vineyards Annette's Reserve Zinfandel. Instead of the typical Rosenblum golden label, it's a dark charcoal. I love oakey, smokey wines with a tobacco undertone and this one smells like an oak barrel and tastes like autumn smoke (in a good way). It's truly superb at $30 per bottle -and they sell it at Trader Joe's here.
I like a good Cabernet Franc when I can find it. For a year my absolute fave was Helena View, and then they all corked.
Earthquake Zin and Seven Deadly Zins are also good.