So here are some snapshots from each channel I can receive, along with the program I recorded it during for the HD channels. For the SD channels I'm not actually sure what each program is, as I never really watch them :-). All of these images were taken from the original transport stream using VLC with the Linear deinterlace filter on. Without further adieu, here they are (be sure to click on each image to see it at full resolution)!
KBZK-DT CBS (Numb3rs)
KBZK-CW CW (Unknown, feel free to leave a comment with what the show is)
KUSM-HD PBS (Nova)
KTVM-HD NBC (Monk)