Previous official Skype applications restricted users to voice calling and only on a WiFi network, which could be overcome by downloading the unlocked Skype application released by xeudoxus on the Droid Forums. The newest version of Skype for Android (version 2.0) supports Skype-to-Skype video calling for a select few devices, and droidrx's .apk works great on the Dell Streak. This version of skype provides excellent, clear quality calls and supports both the front and back facing cameras. It has been confirmed to work with StreakDroid 1.9.0 and 1.9.1.
[xda-developers]