As you might expect, hordes of Michael Jackson fans — which likely includes a healthy number of people who weren't even alive when Thriller came out, let alone any of the earlier Jackson 5 releases — are flocking to iTunes to beef up their music libraries. As of 12:20 on Friday afternoon, 41 songs on the iTunes Top 100 singles chart featured contributions from Michael Jackson on either lead or backing vocals; as for the Top 100 albums, there were 24 entries from either Michael's solo career or from his days fronting the Jackson 5.