Barnacle Wifi Tether Great little app for sharing your phones internet with other devices. Easy to use and has every feature you could want.

Chase Mobile Need to deposit a check but don't want to drive all the way to the bank? This app will let you snap a picture of your check and deposit it right then and there. It also let's you check your Chase checking, savings, and credit accounts (of course).

Maps Need to figure out a way around all that traffic to get where your going? Google Maps will direct you around traffic and get you going. I've had great success with using this app in Seattle though the "traffic avoidance" feature may not be available in all areas. YMMV.

Google Voice I love love love Google Voice's visual voicemail feature. I never have to listen to another voicemail because I get them as texts as well as emails (you can change this setting to only get messages how you want them). Saves the 45-90 seconds of calling my voicemail and listening to someone ramble. Just skim to the important part of the text / email!

GTasks: To Do List & Task List I love to-do lists, and this one not only syncs with my gmail account but updates the mobile copy when ever I make a change on my computer. You can even have multiple to-do lists and when you check something off as done it puts a strike through the line of text but will still show you everything you've accomplished!