Black Sabbath: The Dio Years is a 2007 compilation CD of material from recordings made during vocalist Ronnie James Dio’s tenure in the band. The CD contains full album length, remastered tracks culled from all three studio albums: Heaven and Hell (1980), Mob Rules (1981), Dehumanizer (1992), and the live album Live Evil (1982). It also contains three new recorded songs: “The Devil Cried”, “Shadow of the Wind”, and “Ear in the Wall”.

It was reported that the collection was first conceived of as a box set, in the vein of Black Box: The Complete Original Black Sabbath (1970–1978), containing all of the group’s albums released from their post–Ozzy Osbourne period, starting from Heaven and Hell to The Eternal Idol. This idea was eventually scrapped, and another box set was planned only to feature the four albums recorded from the Dio era of the band. This second idea was put aside, eventually emerging into The Rules of Hell box set released in the summer of 2008.
Black Sabbath were ranked by MTV as the “Greatest Metal Band” of all time, and placed second in VH1’s “100 Greatest Artists of Hard Rock” list. Rolling Stone magazine ranked them number 85 in their “100 Greatest Artists of All Time”. They have sold over 70 million records worldwide. Black Sabbath was inducted into the UK Music Hall of Fame in 2005 and the Rock and Roll Hall of Fame in 2006.
(Source: wiki – http://en.wikipedia.org/wiki/Black_Sabbath:_The_Dio_Years)
Here is the list of 10 best riffs of Black Sabbath with Ronnie James Dio: