On this day, exactly 22 years ago (November 16, 1999), Dr. Dre released his second solo studio album, “2001,” featuring guest appearances from Eminem, The D.O.C., Hittman, Snoop Dogg, Kurupt, Xzibit and Nate Dogg. The album was produced mainly by Dr. Dre and Mel-Man. The album debuted at No. 2…