My favourite 5 albums:

1. Astral Weeks by Van Morrison
2. Californication by Red Hot Chili Peppers
3. Unplugged in New York by Nirvana
4. Takk by Sigur Ros
5. Up the Bracket by The Libertines

Honourable mentions: One by One by Foo Fighters, Elephant by White Stripes and White Album by The Beatles.

I posed this question to a friend of mine in a pub recently, as I am prone to asking ridiculous questions. His reply changed with every mention of a new album, just as mine probably has even now 5 minutes after having compiled the list. But despite this, Astral Weeks shan’t ever be moved from its lofty position, come what may.