1. Everything Zen - 5:09
2. Little Things - 3:32
3. Comedown - 5:10
4. Glycerine - 4:48
5. Machinehead - 5:47
6. Swallowed - 7:33
7. Greedy Fly - 4:19
8. Cold Contagious - 6:03
9. The Chemicals Between Us - 7:13
10. Warm Machine
11. Letting the Cables Sleep
12. The Science of Things [About the Album][Multimedia Track]
13. The Chemicals Between Us [DVD]
14. Comedown [DVD][Live]
15. Glycerine [DVD][Live]
16. Everything Zen [DVD][Live]
17. Machinehead [DVD][Live]
18. Comedown [DVD][Live]
19. Bomb [DVD][Live]
20. Glycerine [DVD][Live]
21. Everything Zen [DVD][Live]
22. Little Things [DVD][Live]

Editorial Reviews:

Come 2005, the evidence showed that '90s rock radio darlings Bush had been put into carbon freeze -- the group hadn't released a new album since 2001's Golden State, while leader Gavin Rossdale had launched a new group, Institute. So the time would be right for a career-spanning "best of" set, correct? Not quite. You do get the group's hits on the 2005 double-disc Zen X Four, but only as videos on the set's DVD portion (which also includes some behind-the-scenes footage). The audio portion, on the other hand, collects live and acoustic versions of most of the group's best-known early tracks. However, since these are not the versions that ruled MTV during the mid- to late '90s, it cannot be considered a true set of hits. From the perspective of longtime fans looking for the uncommon, Zen X Four works much better. After all, several of the tracks are included more than once, and only hardcore fans will be interested in the "acoustic versions" (which aren't really acoustic -- the volume on their Marshall stacks is just lowered a bit). But one thing's for certain, Rossdale certainly has his Cobain-isms down pat on such tracks as "Everything Zen" and "Machinehead." ~ Greg Prato, All Music Guide