Depending on how large you want to go, I picked up one of these to use primarily as a TV.......
NCIX.com - Buy Samsung SyncMaster T240HD 24IN Widescreen LCD Monitor 1920X1200 5ms DVI VGA HDMI Component DTV Tuner - LS24TDNSUV/ZC In Canada.
The price was better than any LCD TV I could find, and I'm happy with the results. I know they also have a 26" version, but I'm not sure how well that compares price-wise to getting a standard 26" LCD TV.
One of the main features this has that sold me on it is the ability to set the aspect ratio for viewing an SD source on a widescreen. The cheap 26" LCD TV I had prior to this monitor did not have that ability so all SD sources ended up being stretched across the entire screen. I just double checked, and can verify that it also does have a headphone jack.
The only issue with the monitor is that the tuner does not have an SVideo input so you either have to use the standard cable, or a high-def (either component, HDMI, or DVI) connection.
__________________
EVGA X58 3X SLI / i7 980X / 3X 4G Mushkin Blackline Frostbite / XFX Pro 1000W / EVGA GTX 680 SC+ 2GB / Corsair F120 / WD 6401AALS / TT Lvl 10 GT
Swiftech MCP655 WC Pump / EK XT 240 Rad / 2X Scythe Ultra Kaze / EK Supreme HF / Primochill Myriad Dual Bay Res / Dell UltraSharp U2412M
Sabertooth 990FX / PhII X4 965 / 2X4G Corsair XMS3 / EVGA GTX580 + EK Block / Corsair 120G Force GT
Corsair TX750 / XSPC EX240 / Swiftech MCP655-B / XSPC Dual Bay Res / ? CPU block / Bitfenix Ghost / Samsung 931BF