The EyeTV One from Elgato makes pulling Digital TV (DTV) from the air and down to Earth as simple as 1-2-3. Install the included EyeTV software then plug the device into an available USB port on your computer and you will be watching DTV on your Mac in no time at all.
I tested the EyeTV One on my Macbook Pro, iMac, and Mac Mini and it worked fine on all three systems. My ultimate goal was two-fold. First I wanted something that would give me TV on the go and second I wanted something that could bring DTV to my Mac Mini which may ultimately serve as a hub for my entertainment system.