Sierra Nevada Pale Ale but I have to snort Afrin before I drink it or the hops sets off my allergies and I get more stuffed up than a Thanksgiving turkey.
I also dig:
Cisco Brewers Whale's Tail Pale Ale
Amstel when I'm on a diet
I'm allergic to hops as well, which is kind of a bitch given my deep, abiding love of all things beer.
Sierra Nevada Pale is a great beer, as is Anchor Steam. Sam Adams Boston Lager is always a good choice and their Oktoberfest is really nice. I picked up a six of Goose Island Oktoberfest and was disappointed. Their other beers are usually very good.
Some of the pumpkin ales coming out this time of year are very good, including one called "Ichabod" by New Holland that's not only great but wins points for the Washington Irving reference. Thirsty Dog, the local brewpub, just put out their own pumpkin and my wife reports it's mighty tasty. Three locations in Ohio!
I like IPAs better than most other styles of beer. Goose Island has a good one on the cheap. A couple bucks more gets you Kalamazoo's Two Hearted Ale, a great, great beer that wins points for the Hemingway reference.
Lately I've been buying Honey Brown from Dundee because they've got an eight pack that includes one bottle each of their new Pale Ale and...damn, some other style, and it's only five bucks.
Bad beer? Jeez, where do I start? If a Nascar driver mentions it in victory lane, avoid.