Mine's "After The Gold Rush" with "Tonight's the Night" at a close second.
After the Gold Rush just has such a good set of songs. I really don't think there's a week song on that album. Every single song could be a single. Although there are better versions of "Birds" out there, particually on Neil Young acrhives.
OH and new live disc coming out June 12th! It's going to be his early 80's stuff. I'm so pumped for it!