For someone who swears by his TiVo, I tend to forget to tape pretty much everything. The most recent thing I forgot to tape was Wilco's appearance on Conan O'Brien last Friday night. And, of course, they played a new song called "We Can Make It Better" (or "Is That The Thanks I Get?" -- no one seems to be sure).
Luckily, The Best Songs Will Never Get Sung... managed to get a great quality rip of the song. Great stuff, check it out:
"Is That The Thanks I Get?" [I like that title better]
Additionally, What Would Jesus Blog? has video of the performance AND audio of Jeff performing it solo.