On the top, from left to right, there are connections for HDMI/DVI (HDMI Connector Pictured), including a set of analog stereo audio inputs (Red and White), and a VGA monitor input for use with a PC.
On the top right is the RF Coaxial Cable/Antenna Connection. Just below the RF connection are headphone and analog stereo audio outputs (Red and White).
On the bottom left there are two sets of HD-Component inputs (Red, Green, and Blue), paired with analog stereo audio inputs (Red and White).
On the bottom right side are a service port, plus two sets of analog stereo audio (Red and White) and composite video inputs (Yellow).
There is also an S-video input option just to the right of one of the composite video inputs.
As you can see, an HDTV has a variety of both standard and HD input options. However, not all the connections shown in this example are present on all HDTVs. Connections such as S-video and component are becoming rare, but other connections (not shown here) such as USB and Ethernet, are becoming more common.