For me, it has to be UEDS. After discovering Lili, I had randomly started listening to many of her songs. But UEDS was the only album off which I listened to the first 6 songs and I was mesmerized. I just loved the Les Collines video which led me to the other tracks:
La Candida
Grand Central
Limelight
A Couer Fendre
Eden Eden (The most beautiful song on the record)
This was the only album which had so many tracks that I loved... Though I couldn't say no to anything Alizée...