Gameloft has provided a gameplay video for their new Uno title we reported the other day.
Overall, the iPhone version of Uno is relatively well implemented, but one of its most compelling features is Online Multi-player play. This means that aside from playing over local Wi-Fi, you can reach out to play others on the internet. (Because, let's be realistic, how many of you are sitting out there playing iPhone games with others in the same room.)
There were no players available when we tested this on the first day of its release, but just today were able to play a few games with some random internet players. Note that you must be on a Wi-Fi connection to play online.
App Store Link: UNO, $7.99