Some beers can certainly benefit from some time (mostly lambics), but I have come to realize that most common beer styles are better enjoyed as fresh as possible.
With that being said, I have a closet full of beers that began as beers I was intending on aging. I am slowly drinking what I have and don't plan to keep much beer for the purpose of aging with a few exceptions.
All that jibber-jabber aside, I had these last night:
Awesome stuff, I wish we could still get it around here.
This bottle was about a year old and didn't seem quite as good as when I had the stuff fresh about a year back, but it was still enjoyable.