You're going to have to give specifics as to what you're looking for. Namely, the following:
- Features are you looking for (Do you need both the TV tuner and image capture, do you need the card to take inputs from game consoles, etc.)
- Local broadcast standard (ISDB, ATSC, DVB, etc.)
- Internal or external (Do you prefer it inside your computer's case or as a box connected by USB?)
Without any detailed information, I can only give general suggestions.
If you live in an ATSC broadcasting region (South Korea, Canada, United States, Mexico):
http://www.cecompass.com/computers-networking/video-graphics-peripherals/atsc-qam-analogue-tv-fm-tuner-video-capture-hybrid-pci-e-video-recorder-card.html
If you live in a DVB broadcasting region (most of Europe):
http://shop.blackgold.tv/epages/BT3159.sf/en_GB/?ObjectPath=/Shops/BT3159/Products/BGT3650
(BlackGold makes a lot of these)