CBS shows I watch: The Price is Right, Jeopardy, Survivor, The Amazing Race, The Mentalist, and Elementary. Although I'm still on the fence about whether I'm going to keep watching Elementary or not. And yes, I've seen all episodes of the BBC Sherlock and I know it is way superior. I don't care if you don't like my viewing habits. If I did, I wouldn't post them. These shows appeal to me and I'm going to keep watching.
Frankly, I'm a huge fan of game shows (GSN from 1998-2003 was awesome) and for me, a lot of reality TV belongs in that genre. There's a lot that doesn't also but generally, if it has a bit of a large cash prize involved, I've checked it out. And I've been big mystery fan ever all my life starting with when I cracked open a Hardy Boys book as a boy and continuing on into Sherlock Holmes and Agatha Christie. That said, I don't watch too many mystery shows on TV but The Mentalist appeals to me because I do like the tone of the show and the main character and all the secondary characters also. I would rate Veronica Mars higher than The Mentalist but both series live in their own worlds/hieghtened reality so while I sometimes roll my eyes about how convienient a character can get out of a situation, I'm willing to forgive it and keep going but your mileage may vary. The sad thing is, I find The Mentalist to be a better imitation of Sherlock Holmes than Sherlock Holmes in Elementary.
My point is, CBS is the network I watch the most shows from and I know plenty of people that watch other shows on it, including friends younger than myself who watch NCIS and NCIS:LA. As much as I don't care for The Big Bang Theory, I'll watch it over those two shows anywhere, anyday and anytime. I've also watched the occasional episode of How I Met Your Mother and Rules of Engagement also. While they never wowed me to the point where I felt the need to tune in week after week and keep watching, I did enjoy the time I spent with them and am welcome to seeing another epsiode or two of them.
CBS: They've got a little something for everyone.