Perhaps you already know about this site, but I think it’s worth mentioning nevertheless. If you want to take a look at your Instagram feed, and maybe favourite a few shots from the people you follow or leave a comment, without leaving the comfort of the big screen of your laptop or desktop computer, you can point your browser to Inkstagram. You authenticate to the site using your Instagram account credential and voilà, here you have this elegant and functional interface. You can even turn it into a standalone application by using tools like Fluid or, if you’re already on Mac OS X Lion, Automator (as Andy Ihnatko explains).
Update 2012 — Roughly at the end of 2011, Inkstagram changed name (nothing else), so you’ll find the service at the new domain Ink361.