The day after Thanksgiving is the biggest shopping day of the year, when prices are slashed and aisles are overrun with frantic bargain hunters. Now that the tryptophan from your Thanksgiving turkey has worn off, are you ready to shop but unsure of what to get some of the folks on your list? Perfect. We've rounded up the latest music-related goodies into four categories: box sets, reissues, DVDs, and books. And to get you into the spirit of the season, we've listened to the new holiday albums in every genre and whittled them down to those worthy of rotation alongside your perennial favorites. Here's a sampling of our selections.