I am a big fan of Dropbox, I use it to sync content on all my devices and the latest update adds a nice video streaming option for ICS devices. You can now specify the app you want to steam video with. So now I have created a folder in Dropbox with all my videos in and then I can stream videos using wifi (or 3G) wherever I want.
The Dropbox app for Android is free from Google Play
What’s in this version:
In version 2.1.4:
• Custom-tailored video streaming for ICS users
• Language support for our Korean speaking friends — 안녕하세요!
• Automatically uploads photos and videos in the background using Wi-Fi or data plan
• Up to 3 GB of free space for uploading photos automatically (in 500 MB increments)
• Upload files of any size