Recalled a couple of others..
Warehouse 13 - This should have been a no-brainer for me. Saul Rubinek as a quirky curmudgeon watching over the collection of weird supernatural and super-science artifacts? Sold! Unfortunately, the casual misogyny by one of the main characters was too annoying to watch.
Battlestar Galactica - I watched for a while, but two things got me - alien (robot) baby that can cure cancer and... the total despondancy of it all. The main characters never caught a win, ever, and they did not establish a solid justification for them to not just use their own sidearms to blow their own brains out. I can accept dark and dire shows, but this was grimdark to the point of my having to gird my emotions up to watch each episode... so I stopped.
I'll join the list of folks who couldn't take Big Bang Theory. I'm okay with comedy poking fun at nerds and nerdy things (like, say, Galaxy Quest) when it is done from a position of caring, but BBT wasn't.