I'm a Stevie Nicks fan, so I'm not objective at all
From Stevie : RHIANNON, DREAMS, ANGEL, SARA, BEAUTIFUL CHILD, GYPSY, Silver Springs, Gold Dust Woman, Landslide, Crystal (loveeee it), That's alright, Sisters of the moon, Seven Wonders, I don't want to know, Thrown Down, and probably every single song... (can I count "Stand Back" ? 'Cause I LOVE it)
From Lindsey : Go your own way (cliche, but greaaaat song), Tusk

, Never going back again (love it), Second Hand news, The ledge, Save me a place, TANGO IN THE NIGHT, Monday Morning, I'm so afraid, Bleed to love her, Peacekeeper (don't know why...), Big Love...
From Christine : EVERYWHERE, YOU MAKE LOVING FUN, Songbird, Over my head, Isn't it midnight, Say you love me, Don't stop (of course), Little lies, HOLD ME, and others, but I cant remember.
AND, OF COURSE, THE CHAIN. It's THE Fleetwood mac song.
And then, from the pre-Stevie-Lindsey period, It's kinda difficult to choose, 'cause I don't know much songs, but I'd say, Oh Well (the whole song !), Man of the world, Black Magic Woman, Need your love so bad, ALBATROSS, The green manalishi...and then HYPNOTIZED (great song).
I'm sure that I've forgotten some songs...