Following on our tradition of making 100% checklists for the GTA games, I have uploaded our Grand Theft Auto IV one today. An HTML version is viewable on the website for those of you just wanting a quick look to see what you've got left to do, a printable .pdf file is also available for those of you who want to print it out and tick off everything you've done so far. The checklist is (as far as we know) the most complete on the web right now and we believe it is entirely accurate. If you do think there are any mistakes anywhere, please point them out to us so we can fix them - some minor cosmetic changes are due to be made to the file anyway. Hopefully you'll find it useful!
Links: GTA IV 100% Checklist and printable .pdf version