If you don’t have cable but still want to stream Olympics – you can use VPN Gate (free public peer-to-peer VPN service):
1. Homepage: http://www.vpngate.net/
2. Download and install SoftEther VPN client by following instructions here: http://www.vpngate.net/en/howto_softether.aspx
3. Start the client, pick a Relay service.
Here you have some options: Canada for CBC or UK for BBC webcasts. I like CBC: http://olympics.cbc.ca/ as they offer on-demand replay for events of a day.