http://www.popculturemadness.com is the best I've found to help me put together a personal playlist.
Billboard.com sucks, showing the top 5 albums per year and wanting a subscription to get anything further.
Rolling Stone never came up on the first few pages of any of my searches. Funny, because they've done some great lists, like the top 500 rock albums of all time.
So, any other suggestions?
Regards,
Keith