[_RPM]

Unfortunately, it is not free. You have to have cable to watch it in most cases.

[infecto]

Its on ABC. You don't need to pay for cable for access to ABC.

[Trisell]

You can usually watch at least the last 3 - 5 episodes on either Hulu or ABC streaming. Also if you live in most major cities, you can also get it for free via old school antenna.

[VLM]

I don't watch much TV so I had to check wikipedia for the show. The reruns are exclusive to CNBC, but the prime time show is on ABC.