I know a few of us use TeamViewer, but its Logmein (FREE) ! normally $29.99.. so I'm happy just to install it and leave it on my device then use it when needed.
App Details:
Description
LogMeIn
by LogMeIn, Inc.
Get secure anytime, anywhere access to your computers from your Android device.
Remotely access your PCs and Macs with LogMeIn for Android. Works with an account subscription of LogMeIn Pro on your computer, which also includes access from your desktop and web browser, so everything you need is always at your fingertips.
Access your files, data and applications and get stuff done:
• Access your home and work computers on the go
• Control your Mac or PC as if you’re sitting right in front of it
• Get to your computer files and edit then from your Android device
• Remotely run any application on your computer from your Android device
To get started:
1. Download the free LogMeIn app
2. Create your LogMeIn ID to start your free 14 day trial of LogMeIn Pro
3. Go to a PC or Mac you want to access and log in at LogMeIn.com
4. Install the LogMeIn software on that computer
Now you’re ready to access your computers from anywhere with LogMeIn.
Includes these premium features that help you stay productive:
• File Manager lets you save files directly on your Android device so you can work on them offline, plus move and copy files between your computers and devices.
• Remote Application Access allows you to use PC/Mac applications from your Android device wherever you go, even proprietary business applications.
• Remote Sound lets you hear remote alerts and notifications during remote control sessions.
Compatible with Android Honeycomb 3.0
Optimized for Android tablets and phones (e.g. Galaxy Tab)
Except… that they've taken away the Free version of LogMeIn - so this app is only useful if you're paying LogMeIn for remote access.