1080i
1080 horizontal lines that are displayed in an interlaced fashion.

1x1 Pixel Mapping
When a source box containing the material (DVD, Receiver, etc) is connected to the TV at the native resolution of the TV this is 1x1 pixel mapping. This is versus doing Source Box Pass-Through, which will not map pixels one by one to each other.

3:2 Pulldown
3:2 Pulldown is the process of transferring film to video. Film is natively shot at 24 frames per second while video is 30 frames, or 60 fields per second. 3:2 Pulldown, in the simplest explanation, changes four frames of film to ten frames of video. Although it may sound simple, this is a fairly complicated process that results in a fairly clean video format conversion. See ‘Reverse 3:2 Pulldown’ for the reverse of this process.

480i
480 horizontal scan lines that are displayed in an interlaced fashion. This is also known as SDTV or standard definition television.

480p
480 horizontal scan lines that are displayed progressively. This is not "High Definition", but is instead called Enhanced Definition TV (EDTV). This is the resolution that DVDs are encoded at.

720p
720 horizontal scan lines that are displayed in a progressive fashion.

8VSB
Stands for 8-level Vestigial Sideband modulation. This is the standard developed by the ATSC and is the way in which OTA transmissions are being broadcast in the United States.