Ratatat Remixes Vol. 1 and 2
Any one ever heard this? It's pretty good. And free. The freestyles are good and many of the songs badly needed new beats. The weakest tracks are songs that already had good beats, but were remixed anyway and suffered from it (Party and Bullshit).
The Grey Album
Excellent album. I don't really like Jay-Z, but Danger Mouse mixes him with the Beatles so well. Hard to find, due to the fact it's illegal, but there are a few torrents for it, I found it on BTJunkie. PSA and What more Can I say are my personal favorites.
Not intended to be a review. What other remixes are there?