Being old school, I like old stuff ... :-)
My recommendations would be all on DVD, because I don't think any of them are on the air or in syndication anymore ...
1. Northern Exposure - comedy about a group of misfits, living in a small logging town in Alaska ... hilarious and thought-provoking ...
2. Columbo - the dumb looking, cigar smoking , trench-coat wearing sleuth that outthinks his adversaries ...
3. Monk - obsessive compulsive detective ... another hilarious show ... 7 thumbs up ...
And a movie that I haven't seen yet but need to .... Shindler's List ...