As I am planning to review all of the albums I own, I see no reason to skip the compilation albums, although it is hard to compare them to the 'normal' studio albums. I bought this album in March of this year (2011) to complete my own collection (!) of Alanis, but I already knew most of the songs. The album consists of 18 songs of which 13 were released on earlier albums, 4 came from soundtracks and other albums and 1 is the cover of Seal's Crazy, which was released as a single. I think it is always difficult to compile a 'best-of' album, especially when an artist have had many hits, like Alanis. According to Alanis (in the booklet) these songs are her favourites, at that time at least. Personally I would have chosen differently, I think.
The album doesn't contain any songs of the time before Jagged Little Pill.
From the album Jagged Little Pill, it contains the following songs:
Head Over Feet