I can't list ten "world class" beers, but I can tell you that no top ten list is accurate if Deschutes "The Abyss" gets left off:
http://www.deschutesbrewery.com/brew...s/default.aspx
http://beeradvocate.com/lists/popular
(Beer Advocate has it at #11 - what do I know....
)
Be it cigars, bourbon, food, wine, beer, whatever.....what interests me and holds my attention is complexity of taste. There is no doubt in my mind that The Abyss is hands down the most complex beer I've ever tasted. And, living in the microbrew beervana that the Pacific Northwest is, I've been lucky to taste quite a few of them. Hard to impossible to find (I have my two cases stashed away), but completely unforgettable once you've had it.
It would top my "10 Best" list, without hesitatioin.