Home page keyword targetting strategy?

[Tonearm]

The various pages on my ecommerce site are very targetted toward keywords, but I don't really have keyword targets for my home page. It seems like a waste since my home page has the highest PR, but any keywords I might choose for the home page would be better targetted by different, more specific pages.

What is your keyword targetting strategy for your home page?

[aristotle]

This may not be applicable to your case, but some site owners use the home page to try establish a brand name that past visitors might remember and search for again in the future.

[JohnRoy]

Another approach:
More broad keywords, 2 to 5, which are hard to obtain but provide more traffic, are targeted for home page which has highest PR referrals.

[Tonearm]

I like both ideas, thanks guys.