Relative importance of various interconnect types

[zepman1]

This has probably been discussed here before, but what is the conventional wisdom on the relative importance of various interconnect types? Where can you skimp more on quality? My line of thought is the following (from most important to least):

1) speaker cables
2) analog audio cables
3) analog video (ie component video)
4) hdmi/dvi
5) optical
6) digital coax
7) power cords

Any thoughts on this? Want to know where my priorities should be when selecting interconnects.