Don't want to wait for Skype to come to Windows Phone? Have a developer unlocked device? Then you can head over to XDA to grab the XAP file for Tango, the video calling and VOIP solution that costs nothing to use. Originally offered on the HTC Titan and Radar, it has been ported to older Windows Phones for some fun.
We loaded it up on our HTC Arrives and sure enough, it works. Sure, video calling is a bit choppy, even over WiFi and the audio is only routed through the rear speaker, but the novelty of it is certainly exciting.
The app seems to work on all HTC generation phones and LG phones, but only audio for Samsung devices (Focus, Omnia 7) and of course there's no love for Dell.
Head here to XDA for the relevant thread. Thanks, David, for the link!