This is a solid, no-frills CBR/CBZ viewer. Use it to read all those comic archives that you found lying around. Free.
Aldiko is a decent eBook reader and possibly the best available on Android. It doesn't handle DRM. Free.
Select a contact or photo and then bump phones with another person who is also running the Bump app. It uses location information and the timing of the bump to detect the two phones involved and transfer the file between the two devices over the Internet. The Android version is even compatible with the iPhone version. Free.
If you're a sysadmin, this one's for you. It's a Secure Shell client for Android. Free.
A Trekker geek toy, this app turns your phone into a tricorder. The coolest thing about it is that it actually uses real data from your phone's sensors. It can display acceleration, the local magnetic field, an analysis of the local acoustic environment, your location from various providers, the availability and strength of cellular and Wi-Fi signals and the current state of the sun and solar wind. Free.
Swype is a keyboard replacement for your Android that allows you to sweep your finger along the screen in one continuous motion from letter to letter. It's a faster, easier way to input text on your screen using your finger as a stylus. Free.
A task manager for Android phones, Advanced Task Killer allows you to kill apps running in the background with a single click. Free.
With this app, you can discover and buy music, find tour dates, browse videos and share your discoveries on Facebook and Twitter. You can even identify music by letting your phone "listen" to it. Free and paid. The premium version, Shazam Encore, features unlimited tagging and recommendations, and goes for $4.99.
27) Google Goggles
Google Goggles is a visual search app. Take a picture of the object, landmark, logo, etc. you want information about and Google Goggles will return relevant search results. It will even provide information about businesses by displaying their names directly in the camera preview. Free.
Start listening to free, personalized Internet radio on your Android. This app brings Pandora off your computer and puts it on your phone. It's fully integrated with Pandora on the Web. You can listen to all your existing stations and create new ones on your phone too. Free.
Have some fun taking photos on your Android phone by adding filters, including the fisheye and the Warhol effects. Free.
Turn your phone into an Augmented Reality device with Layar. It uses your phone's camera, compass and GPS data to identify your location and field of view, retrieves data based on those geographical coordinates and then layers that data over the camera view. Free.
This alarm clock uses the Android's accelerometer to track your body movements while sleeping and wake you up just as your last dream finishes, ensuring you've had as restful a night of sleep as possible. Free.
Secure your World of Warcraft account by turning your phone into an electronic token. Once you enable the authenticator on your account and download the app, the app generates a unique, eight-digit numeric code that you use to log into your account. Each code is only valid once. Free.
33) ESPN ScoreCenter
Get comprehensive ESPN sports coverage on your Android phone with this app. It provides near-real-time scores and schedules. Free.
Scan a product's barcode and you can get reviews and price alerts using this app. You can also use it to create wishlists. Free.
35) Exchange Rates
Exchange Rates is a currency converter that shows current exchange rates. Best of all: no ads. Free.
Use this app to keep up with everything about the movies. In addition to movie reviews and show times, you can watch trailers and clips from just about any movie. Free.