My bet is that Kwaping's is "Lisztomania" or 1901.

My number one 2009 song is Two Weeks by Grizzly Bear, but overall on my iTunes its Animal Collective's For Reverend Green,

we had this thread before I think.

In 2009 I have,  Gazillion Ear @ 68 plays

Overall, Dear Sirs - El P @ 156

Good guess, but mine might surprise you:

We Are Rockstars, Does It Offend You Yeah? @ 168 plays (!)

GfC, Albert Hammond Jr. @ 120

Lisztomania @ 118 (okay so you weren't that far off)

Never Stops, Deerhunter @ 114

Broken, Late of the Pier @ 108, tied with L.E.S. Artistes

I had no idea I listened to GfC that much, but the others are not super surprising to me. 1901 is not even in my top 25.

Last time I checked my home comp's top played were (of 2009) Summertime Clothes - AC and (all time) California Stars - Wilco & Billy Bragg

Oh, and I'm not crazy for being a Phoenix fanboy - it's at 108 days in the top 100 over at Amazon/MP3. The next closest album in the top 10 is at 31 days, with most of them being there less than a week. Go Phoenix! :)

#1 of 2009 is Deer Tick's "Easy"

#1 overall is Deer Tick "Baltimore Blues No. 1"

Buuut I got a new HD a couple months ago. Last.fm probably has something different.