No clue what networks these are on, but if it's TBS or FOX, it's because of MLB playoffs. Hell's Kitchen isn't on either, and I wanted to watch that :\
Leverage is a great con show. A Master theif / Genius Hacker / Professional Assassin / Grifter and the MasterMind come together to work con's on criminals. It's got great cons and hilarious character interactions.
The Mentalist is about a guy who used to be a psychic (cold reader) and was attempting to gain fame by trying to read a serial killer through his tv show and get him to stop killing. The killer code named 'Red John' got pissed off and slashes up his wife and daughter. Now the guy works with the CBI (like FBI) and is trying to hunt down the killer. The main thing about this show is that Patrick Jane - the cold reader - is fucking badass (says when he finds john he will kill him and anyone in his way - even the CBI he works with). Also he traps people in mind games and gets them to confess using all sorts of tricks and cons, its great.
Criminal Minds is about serial killers. Every episode features a different type of serial killer and the profilers that try to catch him. How can you not like this?
Burn Notice is about a Spy that gets 'burned' which is blacklisted. He has no identity or bank accounts etc and all the other spy people don't want to get involved with him. So now all the people he has fucked in the past know where he is and can find him. Every week he does cons and fights the bad guys in ingenious 'spy' ways.
True Blood/ Supernatural are about monsters and are fun to watch - fuck you.