DOOBIEXX  The best To-Do app out there. When it comes to the big ones like things, omnifocus, the hit list can barely do what actiongear can and cost double or in some cases (THL) triple the cost. Grab this and enjoy more features than anyother app of it's kind. Only problem is this app doesn't get the proper exposure it deserves and if that remains the case the dev will one day have to stop supporting it. Save your money and buy this app. Please try out the others and see how much of your computer's memory is used. Actiongear is lightweight and includes things like screenshot so you don't need apps like littlesnapper or anything else. Try the app, you'll be glad you did.  
(Version 1.0.4)

GLOBETROTTERDK  I just found what is called "quick look", so there is a way to view the attachments.  
(Version 1.0.1)

GLOBETROTTERDK  ActionGear has been reviewed by TUAW. You can find the review here:

http://www.tuaw.com/2008/10/28/actiongear-simple-yet-powerful-task-management/

My personal opinion on ActionGear is that it seems to be very usefull. It is still early days:

1) It seems to unfortunately be lacking support for Default Folder X.

2) No means of viewing attachments.

3) There doesn't seem to be an option for importing specific tasks into iCal.

Stability seems to be rock solid on a G5 single PPC.

The screenshot utility is quite handy.   
(Version 1.0.1)