For our Christmas bonus this year at work, we got to pick either a new video ipod, a portable DVD player, a Tivo, or a Slingbox Pro. I went with the Slingbox Pro.
I had a bit of frustration setting it up with my router, and had to manually configure the port forwarding as the automatic forwarding didn't work. And my CD seemed defective, I had to download the media myself. And registration never did work for me. But I did get it to work before my post-Christmas business trip left.
I was able to watch it from the airport with my Sprint mobile broadband card. The quality isn't that great but it's perfectly watchable. The biggest issue, actually, was hitting the Tivo buttons (since I was watching prerecorded) to fast forward through commercials, there was a good amount of buffering and network lag to factor in. I also watched it a bit from two different hotels. Quite fun!