"GTD Lite"

is there a "GTD Lite" out there, for applying the GTD method without going overboard with the whole thing? i think to some people it's so enormous that it's un-doable, or too complicated.

One thing: weekly review

If I had to boil a successful GTD implementation down to just one thing, it would be the weekly review. Everything else is just details. I'm happy if I'm doing a weekly review, even if my lists are a mess (uh... what lists?) or if my calendar is blank (or missing) and my file system is untrustworthy.

Of course, the weekly review is also probably the hardest part of the system as well.