Two thousand and eleven. I’ve never heard anyone pronounce it otherwise (except for ridiculously deep and dramatic American movie trailer announcers, but they only ever incite giggles at how stupid they sound). I’m actually amazed that you haven’t included it as an option.
Y2k+11
Two thousand and eleven.
I use both “twenty eleven” and “two thousand and eleven”. Probably the former more often. The latter is a bit of a mouthful, although at full talking speed it can be enunciated something more like “two thoun leven”.
I think the problem is that “eleven” is such an everyday number that it is often used in other contexts, whereas if, a while back, you said “ninety seven” people would probably assume you meant the year without needing contextual clues.
Twenty-eleventy. Or, in the stricter sense, two thousand and eleventy.
Where’s the both option?
two zero one one. i like to be consistent and this way, it’ll work for any year.
Two thousand eleven. “Twenty eleven” sounds too close to “eleventy” to me, like a kid saying, “Eleventy-zillion”.
“Two thousand eleven”
I won’t be switching back to the “Nineteen ninety-nine” format until 2101.
If you had asked a few years ago, I would have said that by now I’d be saying “twenty-eleven.” I would have adduced the analogy with nineteen-eleven. But in fact, I usually say “two thousand eleven.” Not sure why I do that. It just seems to roll off the tongue more easily, despite being a syllable longer. Maybe it’s just inertia, from a decade of saying it that way. Perhaps I’ll switch to the other way in 2012 or (more likely) 2013. At least I don’t say “twenty-oh-eleven” as I’ve heard on a radio commercial for a car dealership. The 20011 models must be very advanced, being 18,000 years ahead of their time.
Two thousand eleven.
I don’t see why people make such a point out of “we didn’t say nineteen hundred”. No we didn’t but so what? We’re in a different century and we can say it however we want to.
People say nineteen-oh-three but that doesn’t mean we have to say this is two-oh-eleven.
I’ll go back and forth, but for this year Two Thousand Eleven seems to roll off the tongue a bit better.
And yet for 2012, Twenty Twelve sounds better to my ears.
“Twenty eleven” is what I feel the answer “should” be, so I voted for that. But I probably slip up occasionally and say it the other way too.
Well, of course it’s a personal preference, that’s why it’s a poll. But speaking as one of the minority, I’ll just say I prefer a bit of continuity in these expressions. 
And the fact is, most people do actually say “nineteen hundred,” that’s the point - the comparable reference to 2000 would be “twenty hundred,” though as I said that sounds weird to me, so it’s an exception in my book. The comparable (awkward sounding to my ears) expression to referring to 2000 as “two thousand” would be referring to 1900 as “one thousand nine hundred” - which I’ve never heard, with the possible exception of the aforementioned “In the year of our lord” expression. And the comparable expression to “nineteen-oh-three” would be “twenty-oh-three,” which is how I reference that year.
I go back & forth, but two thousand eleven is a bit more common.
Nineteen eleventy-one.
Just kidding. It’s twenty eleven.
Oh cool. I thought I was going to be in the minority with my sticking with “two thousand and eleven,” revealing me as backwards and old-fashioned. (I still don’t have a smartphone or DVR, either.)
As far as it being more cumbersome than twenty-eleven… it’s only one extra syllable! I’m just not in that big a hurry.
(Also, “twenty-eleven” sounds like kid-speak for “31.”)
Two Thousand and Eleven, because that’s just how us Brits do it (doing it without the “and” still sounds weird to me, despite having The Daily Show subject me to that form well, daily).
This, minus the Daily Show bit.
Two thousand eleven for me.
The nuns at my parochial school pounded into us that the word “and” had no business in the verbal expression of a number. This makes “two thousand and eleven” grate on my ears to an amazing degree.