Instagram Now my meals can be shown off to the world in proper fashion... Seriously though, this is an addictive app. Easy to use, photos look great and with one click you can share to FB and Twitter.
Flickr Love being able to browse through my friend's photos online as well as take, and share my own straight from my android. Only thing really missing is the option to view the groups I subscribe through online. Otherwise, great app!
Photobucket Mobile Love this for just the straightforward sharing of photos to Facebook or Twitter. It has a beautiful and easy to use interface, but I would appreciate folders along with the option to not have to scroll through all of my photos.
SmugMug Mobile What an awesome-ly cool app. This one is a bit under the radar I think, but excellent for uploading, creating and viewing galleries. Plus you can also upload videos along with photos.
ShoeBox If you're like me, you've got loads of old photos sitting around waiting to be viewed. Shoebox basically turns your Android into a photo scanner. Once they're digitized, you can keep them private or share with others.