Could quite easily have voted for all ten, but went for Take It Easy. Quite simply when played live it is absolutely magical, plus it contains my favourite lyric ever:
Well I'm standing on the corner in Winslow, Arizona; and such a fine sight to see:
It's a girl my Lord in a flatbed Ford slowing down to take a look at me.
I suppose it's also kind of special because it was the song that launched by favoruite band ever, who, love them or loathe them, became along with Fleetwood Mac probably the biggest band of the 1970s, one of the most successful artists ever, and the highest selling American band of all time.
Another fun fact - This album was the biggest selling of the 20th Century.